When to call a doctor

When to call a doctor refers to the decision-making process patients and caregivers use to determine when symptoms, injuries, medication problems, test results, or health concerns require medical advice, urgent care, or emergency treatment. Knowing when to seek care is an important part of patient education, patient safety, preventive medicine, and primary care.

Doctor_examines_patient_with_stethoscope

Auscultation of a women

Some symptoms can safely wait for a routine appointment, while others require same-day medical advice, urgent care, or immediate emergency services. Patients should call emergency services such as 911 in the United States, or the local emergency number in their country, for potentially life-threatening symptoms such as severe chest pain, severe shortness of breath, signs of stroke, uncontrolled bleeding, severe allergic reaction, loss of consciousness, or serious injury. Authoritative patient safety sources list breathing difficulty, chest pain or pressure, sudden confusion, fainting, severe bleeding, choking, head or spine injury, and stroke-like symptoms among warning signs of a medical emergency.

Overview

Patients often wonder whether they should call their doctor, use telemedicine, visit an urgent care center, go to the emergency department, or call emergency medical services. The correct choice depends on the severity of symptoms, speed of onset, underlying medical conditions, age, pregnancy status, immune status, medication use, and whether the problem could threaten life, limb, vision, breathing, brain function, or major organ function.

This article gives general guidance. It does not replace the advice of a licensed health care provider. When in doubt, especially for sudden, severe, or worsening symptoms, it is safer to seek medical help.

Basic rule

A simple rule for patients is:

• Call emergency services immediately for symptoms that may be life-threatening.
• Call a doctor the same day for symptoms that are concerning, worsening, unusual, or not improving.
• Schedule a routine appointment for non-urgent symptoms, preventive care, follow-up, medication questions, or chronic disease management.
• Use telemedicine when symptoms are mild or moderate and a physical examination is not immediately required.
• Do not delay care because of embarrassment, fear, cost concerns, or uncertainty when serious symptoms are present.

Emergency warning signs

Call 911 or the local emergency number immediately for any symptom that could represent a medical emergency. Do not drive yourself to the emergency department if you may lose consciousness, have severe chest pain, have trouble breathing, or have stroke symptoms.

Emergency warning signs include:

• Severe or persistent chest pain or chest pressure
• Shortness of breath, difficulty breathing, or gasping
• Signs of stroke, such as face drooping, arm weakness, speech difficulty, sudden confusion, or sudden trouble seeing
• Sudden severe headache, especially the worst headache of life
• Fainting, loss of consciousness, or inability to wake the person
• New seizure or repeated seizures
• Severe allergic reaction or anaphylaxis
• Choking or inability to breathe
• Severe bleeding that will not stop
• Coughing up blood or vomiting blood
• Severe abdominal pain
• Severe injury, major burn, head injury, neck injury, or possible broken bone
• Sudden weakness, paralysis, or inability to walk
• Sudden confusion, severe drowsiness, or unusual behavior
• Suicidal thoughts, homicidal thoughts, or immediate danger to self or others
• Poisoning or overdose
• Severe dehydration with confusion, fainting, or inability to keep fluids down
• Bluish lips or face
• High fever with stiff neck, confusion, rash, or difficulty breathing

MedlinePlus advises emergency care for symptoms such as trouble breathing, fainting, sudden severe headache, sudden confusion, heavy bleeding, severe pain, serious burns, possible broken bones, and coughing or vomiting blood.

When to call 911 instead of the doctor's office

Call emergency services rather than waiting for a doctor's office callback if the person has:

• A life-threatening problem
• A rapidly worsening condition
• Severe breathing difficulty
• Chest pain suggesting a heart attack
• Stroke symptoms
• Severe bleeding
• Severe trauma
• Loss of consciousness
• Severe allergic reaction
• Suicidal or violent behavior
• Severe confusion or inability to respond normally

The American Heart Association advises calling 911 for emergencies such as severe chest pain, difficulty breathing, choking, stroke symptoms, severe bleeding, unconsciousness, severe allergic reaction, or any situation where life is in immediate danger.

Emergency versus urgent care versus routine care

Type of care	When to use it	Examples
Emergency services / emergency department	For life-threatening or limb-threatening problems	Chest pain, stroke symptoms, severe breathing difficulty, severe bleeding, major trauma, loss of consciousness
Urgent care	For problems needing prompt care but not usually life-threatening	Minor fractures, sprains, mild asthma flare, urinary symptoms, ear pain, minor cuts, fever without emergency signs
Same-day doctor call	For concerning symptoms needing advice, triage, or medication changes	Worsening chronic disease, medication side effects, persistent fever, new rash, worsening pain, abnormal test result
Routine appointment	For stable or non-urgent problems	Preventive visit, chronic disease follow-up, mild long-term symptoms, medication refills, screening tests
Telemedicine	For selected non-emergency concerns that can be assessed remotely	Medication questions, mild infections, follow-up visits, counseling, chronic disease review

Chest pain

Call emergency services immediately for chest pain or chest pressure that is severe, persistent, recurrent, or associated with:

• Shortness of breath
• Sweating
• Nausea or vomiting
• Pain spreading to the arm, jaw, neck, back, or shoulder
• Dizziness
• Fainting
• Irregular heartbeat
• Weakness
• A feeling of impending doom

Chest pain can be caused by heart attack, pulmonary embolism, aortic dissection, pneumonia, pneumothorax, gastroesophageal reflux disease, muscle strain, anxiety, and many other conditions. Because some causes are life-threatening, chest pain should be taken seriously.

Breathing problems

Call emergency services for:

• Severe shortness of breath
• Blue lips or face
• Gasping or inability to speak full sentences
• Wheezing not improving with prescribed medicine
• Choking
• New severe breathing trouble after an allergic exposure
• Chest pain with shortness of breath
• Confusion or sleepiness with breathing problems

Call a doctor the same day for:

• Worsening cough
• Mild shortness of breath
• Fever with cough
• Increased inhaler use in asthma or chronic obstructive pulmonary disease
• New wheezing
• Shortness of breath when lying flat
• Swelling of legs with breathlessness

Stroke symptoms

Call emergency services immediately for possible stroke. Use the FAST warning signs:

FAST sign	What to look for
F - Face	Face drooping, uneven smile, or numbness
A - Arm	Arm weakness, drifting, or numbness
S - Speech	Slurred speech, trouble speaking, or trouble understanding
T - Time	Time to call emergency services immediately

Other possible stroke symptoms include sudden severe headache, sudden vision loss, dizziness, loss of balance, confusion, or weakness on one side of the body.

Severe headache

Call emergency services for a headache that is:

• Sudden and severe
• The worst headache of life
• Associated with confusion
• Associated with weakness, numbness, vision loss, or trouble speaking
• Associated with fever and stiff neck
• After a head injury
• Associated with seizure
• New during pregnancy or postpartum
• New in a person with cancer or immune suppression

Call a doctor promptly for headaches that are new, changing, increasing in frequency, waking the patient from sleep, or interfering with daily life.

Fever

Fever is common and often caused by infection, inflammation, heat illness, medication reactions, or other conditions. The need to call a doctor depends on age, temperature, duration, associated symptoms, and medical history.

Call a doctor the same day for:

• Fever lasting more than several days
• Fever with worsening symptoms
• Fever in a person with a weakened immune system
• Fever during chemotherapy
• Fever after surgery
• Fever with severe sore throat, ear pain, painful urination, or persistent cough
• Fever with dehydration
• Fever in a pregnant patient
• Fever in an infant or young child, especially if the child is younger than 3 months

Call emergency services for fever with:

• Confusion
• Stiff neck
• Severe headache
• Trouble breathing
• Purple or rapidly spreading rash
• Seizure
• Severe weakness
• Signs of sepsis
• Inability to wake or interact normally

Abdominal pain

Call emergency services for severe abdominal pain, especially if associated with:

• Chest pain
• Fainting
• Severe vomiting
• Vomiting blood
• Black or bloody stools
• Rigid or swollen abdomen
• Pregnancy
• High fever
• Severe dehydration
• Recent abdominal injury
• Severe pain in the right lower abdomen
• Severe pain with confusion or weakness

Call a doctor promptly for abdominal pain that is persistent, worsening, recurrent, associated with weight loss, associated with jaundice, or accompanied by changes in bowel habits.

Vomiting and diarrhea

Call a doctor the same day for vomiting or diarrhea with:

• Signs of dehydration
• Blood in stool
• Vomiting blood
• Severe abdominal pain
• Fever
• Symptoms lasting more than a few days
• Recent travel
• Pregnancy
• Older age
• Infants or young children
• Immune suppression
• Inability to keep fluids down

Seek emergency help if vomiting is associated with chest pain, severe abdominal pain, confusion, high fever with stiff neck, blurred vision, rectal bleeding, or fecal material or fecal odor in vomit.

Bleeding

Call emergency services for:

• Bleeding that will not stop after firm pressure
• Heavy bleeding
• Vomiting blood
• Coughing up blood
• Black tarry stools
• Large amounts of blood in stool
• Severe bleeding after injury
• Bleeding with dizziness, fainting, or weakness
• Bleeding during pregnancy
• Bleeding in a person taking anticoagulant medicine

Call a doctor promptly for unusual bruising, recurrent nosebleeds, blood in urine, heavy menstrual bleeding, or bleeding after starting a new medicine.

Injuries and trauma

Call emergency services for:

• Head injury with loss of consciousness, vomiting, confusion, severe headache, or seizure
• Neck or spine injury
• Major motor vehicle crash injury
• Fall from height
• Severe burn
• Possible broken bone with deformity
• Bone protruding through skin
• Deep wound
• Severe bleeding
• Crush injury
• Eye injury
• Amputation
• Electrical injury
• Near drowning

Visit urgent care or call a doctor for minor sprains, small cuts, mild burns, or injuries that are painful but not severe.

Allergic reactions

Call emergency services for signs of anaphylaxis, including:

• Trouble breathing
• Swelling of lips, tongue, throat, or face
• Wheezing
• Hives with breathing trouble
• Dizziness or fainting
• Vomiting with allergic symptoms
• Sudden severe weakness after exposure to a food, medicine, insect sting, or allergen

If prescribed, use an epinephrine autoinjector immediately and then call emergency services.

Call a doctor for mild allergic symptoms such as localized rash, itching, mild hives, or medication reactions without breathing difficulty, unless symptoms are rapidly worsening.

Mental health emergencies

Call emergency services or a crisis line immediately if a person has:

• Thoughts of suicide
• Thoughts of harming others
• A suicide plan or access to weapons or medications
• Severe agitation or violent behavior
• Psychosis with unsafe behavior
• Severe confusion
• Overdose
• Inability to care for basic needs
• Severe withdrawal symptoms

In the United States, the 988 Suicide & Crisis Lifeline may be reached by calling or texting 988.

Medication problems

Call a doctor promptly for:

• New side effects after starting a medicine
• Rash after taking a medicine
• Dizziness or fainting after a new medicine
• Severe nausea, vomiting, or diarrhea from medicine
• Confusion after medication changes
• Missed doses of important medicines
• Questions about interactions
• Need for refills before running out
• Accidental double dose

Call poison control or emergency services for suspected overdose, accidental ingestion, or serious medication reaction.

Patients should keep an updated medication list and tell health professionals about all prescription drugs, over-the-counter medicines, supplements, allergies, and prior reactions. MedlinePlus recommends asking questions and ensuring clinicians know all medicines and allergies as part of patient safety.

Abnormal test results

Call a doctor if:

• You receive an abnormal lab result and do not understand it.
• A result is marked critical or urgent.
• Symptoms are worsening while waiting for results.
• You were told to call if a result was abnormal.
• You see a test result online but have not yet heard from the office.
• A medication change may be needed based on the result.

Do not assume that no news means normal results. Patients should know how and when results will be communicated.

Chronic disease warning signs

People with chronic diseases should call a doctor earlier when symptoms change.

Diabetes

Patients with diabetes mellitus should call a doctor for:

• Repeated high blood sugar
• Low blood sugar episodes
• Vomiting or inability to eat
• Symptoms of dehydration
• Foot wound or infection
• Fever
• Ketones in urine or blood
• Confusion
• Medication side effects

Emergency care may be needed for severe hypoglycemia, diabetic ketoacidosis symptoms, or altered mental status.

Heart disease

Patients with heart disease should call promptly for:

• Chest discomfort
• Shortness of breath
• New swelling in legs
• Rapid weight gain
• Palpitations
• Dizziness
• Fainting
• Worsening fatigue
• Reduced exercise tolerance

Emergency care is needed for severe chest pain, fainting, severe breathlessness, or stroke symptoms.

Asthma and COPD

Patients with asthma or chronic obstructive pulmonary disease should call a doctor for:

• Increased rescue inhaler use
• Worsening wheeze
• Fever with cough
• Change in sputum color or amount
• Nighttime breathing symptoms
• Shortness of breath with usual activities

Emergency care is needed for severe breathing difficulty, blue lips, confusion, or inability to speak.

High blood pressure

Patients with hypertension should call a doctor for repeated high readings, medication side effects, or symptoms such as headache, dizziness, or swelling. Emergency care is needed for very high blood pressure with chest pain, shortness of breath, confusion, weakness, vision changes, or severe headache.

When children need medical care

Children may become seriously ill quickly. Parents and caregivers should call a pediatrician or seek urgent care when concerned.

Call a doctor promptly if a child has:

• Fever in an infant younger than 3 months
• Trouble breathing
• Persistent vomiting or diarrhea
• Signs of dehydration
• Not drinking
• Unusual sleepiness or irritability
• Rash with fever
• Ear pain
• Severe sore throat
• Worsening cough
• Painful urination
• Limping or refusal to walk
• Persistent abdominal pain

Call emergency services for:

• Blue lips or face
• Severe breathing difficulty
• Seizure
• Unresponsiveness
• Severe allergic reaction
• Serious injury
• Possible poisoning
• Signs of meningitis
• Severe dehydration
• Child abuse concern or unsafe environment

When older adults need medical care

Older adults may have serious illness with subtle symptoms. Call a doctor promptly for:

• New confusion
• Falls
• Weakness
• Decreased appetite
• Dehydration
• New urinary symptoms
• Worsening shortness of breath
• Medication side effects
• New dizziness
• Sudden decline in function
• Unexplained weight loss
• New swelling
• Pressure sores

Emergency care is needed for stroke symptoms, chest pain, severe breathing difficulty, fainting, head injury, uncontrolled bleeding, or severe infection signs.

Pregnancy and postpartum warning signs

Pregnant and postpartum patients should contact their obstetric care team promptly for concerning symptoms.

Call emergency services or seek urgent care for:

• Heavy vaginal bleeding
• Severe abdominal pain
• Severe headache
• Vision changes
• Seizure
• Chest pain
• Shortness of breath
• Fainting
• Severe swelling of face or hands
• Decreased fetal movement
• Fever
• Severe vomiting
• Thoughts of self-harm
• Severe depression or psychosis
• Leg swelling with pain or shortness of breath

Immunocompromised patients

Patients with weakened immune systems should call a doctor earlier than usual. This includes people receiving chemotherapy, transplant recipients, people taking strong immunosuppressive medicines, people with advanced HIV, and some patients with autoimmune diseases.

Call promptly for:

• Fever
• Chills
• New cough
• Shortness of breath
• Rash
• Wound redness
• Painful urination
• Diarrhea
• Mouth sores
• Exposure to contagious illness
• Any rapidly worsening symptom

After surgery or a medical procedure

Call the surgeon or doctor if after surgery there is:

• Fever
• Increasing pain
• Redness, warmth, swelling, or drainage from the wound
• Bleeding
• Shortness of breath
• Chest pain
• Calf pain or swelling
• Vomiting
• Inability to urinate
• Confusion
• Medication side effects
• Wound opening
• New weakness or numbness

Emergency care is needed for severe bleeding, trouble breathing, chest pain, fainting, or signs of stroke.

Dental symptoms

Call a dentist, oral surgeon, or doctor for:

• Severe toothache
• Facial swelling
• Dental abscess
• Fever with dental pain
• Difficulty opening the mouth
• Difficulty swallowing
• Trauma to teeth or jaw
• Uncontrolled bleeding after extraction
• Broken tooth with severe pain
• Oral ulcer that does not heal

Emergency care is needed for swelling that affects breathing or swallowing, rapidly spreading facial infection, or severe trauma.

Eye symptoms

Seek urgent eye care or emergency care for:

• Sudden vision loss
• Eye injury
• Chemical exposure to eye
• Severe eye pain
• New flashes or floaters
• Curtain-like loss of vision
• Red eye with vision change
• Unequal pupils after injury
• Severe headache with eye pain
• Contact lens-related pain with redness

Skin symptoms

Call a doctor for:

• Rapidly spreading redness
• Skin infection with fever
• Painful rash
• Blisters
• Rash after starting a new medicine
• Tick bite with rash or fever
• Wound not healing
• Changing mole
• Severe itching
• Pressure sore

Emergency care is needed for rash with breathing difficulty, widespread blistering, purple rash with fever, or skin infection with confusion or low blood pressure.

When to use telemedicine

Telemedicine may be useful for:

• Mild respiratory symptoms
• Medication questions
• Review of test results
• Stable chronic disease follow-up
• Mild skin rashes with photos
• Mental health counseling
• Nutrition counseling
• Follow-up after a recent visit
• Minor urinary symptoms in selected patients
• Patient education

Telemedicine is not ideal for severe symptoms, chest pain, severe shortness of breath, stroke symptoms, major injuries, severe abdominal pain, or conditions needing hands-on examination or procedures.

How to prepare before calling a doctor

Before calling, gather:

• Main symptom or concern
• When it started
• Whether it is getting better or worse
• Temperature, blood pressure, pulse, blood sugar, or oxygen saturation if available
• Current medications
• Allergies
• Medical conditions
• Recent surgeries or hospital visits
• Recent travel or exposures
• Pregnancy status if relevant
• Photos of rash or wound if using telemedicine
• Pharmacy name and phone number
• Questions you want answered

What to say when calling

Patients can use this format:

My name is __________.
I am calling about __________.
The symptom started __________.
It is getting better / worse / staying the same.
My most concerning symptom is __________.
My temperature / blood pressure / blood sugar / oxygen level is __________.
My medical conditions include __________.
My medicines include __________.
I am worried because __________.
What should I do now?

Symptom tracking

A symptom log can help the doctor understand the problem.

Information to track	Example
Symptom	Cough, fever, abdominal pain, dizziness
Start time	Began Monday morning
Severity	Mild, moderate, severe, or pain scale 0 to 10
Pattern	Constant, comes and goes, worse at night
Triggers	Food, exertion, position, medication, exposure
Associated symptoms	Fever, vomiting, rash, shortness of breath
Home measurements	Temperature, blood pressure, blood glucose, oxygen saturation
Medicines tried	Acetaminophen, inhaler, fluids, prescribed medicine
Response	Improved, no change, worsened

Questions to ask the doctor

Useful questions include:

• Do I need to be seen today?
• Should I go to urgent care or the emergency department?
• What warning signs should make me call 911?
• What can I do at home?
• Should I stop or change any medicine?
• Do I need testing?
• When should I follow up?
• What should I do if symptoms worsen?
• Who should I call after office hours?
• Are there side effects I should watch for?

Common reasons to call a doctor

Common reasons include:

• New symptom
• Worsening symptom
• Persistent fever
• Medication reaction
• Abnormal test result
• Chronic disease flare
• Pain not improving
• Infection symptoms
• Mental health concern
• Pregnancy concern
• Postoperative concern
• Need for refill or medication clarification
• Follow-up after hospital discharge

When not to wait

Do not wait for a routine appointment if symptoms are:

• Sudden
• Severe
• Worsening quickly
• Associated with breathing difficulty
• Associated with chest pain
• Associated with confusion
• Associated with fainting
• Associated with weakness or paralysis
• Associated with heavy bleeding
• Occurring in an infant, pregnant person, older adult, or immunocompromised patient
• Different from anything experienced before

Patient safety tips

To improve safety:

• Keep a current medication list.
• Know your allergies.
• Know your diagnoses.
• Keep emergency contacts available.
• Ask how to reach your doctor after hours.
• Do not ignore severe symptoms.
• Bring a family member or friend to important visits when possible.
• Ask questions if instructions are unclear.
• Repeat instructions back to confirm understanding.
• Follow up on test results.
• Keep copies of important medical records.

Common myths

Myth	Fact
If I call the doctor, I am bothering them.	Doctors expect patients to call about concerning symptoms.
Chest pain is probably just indigestion.	Chest pain can be harmless, but it can also be a heart attack and should be evaluated urgently when severe or persistent.
Young people do not have emergencies.	Serious illness and injury can occur at any age.
If symptoms go away, I never need follow-up.	Some symptoms, such as stroke-like symptoms or fainting, still need medical evaluation even if they improve.
Telemedicine can handle any problem.	Severe or emergency symptoms need in-person urgent or emergency care.
No news means my test results are normal.	Patients should confirm how test results will be communicated.

Red flag symptom table

Symptom	Possible concern	Recommended action
Severe chest pain	Heart attack, pulmonary embolism, aortic dissection	Call emergency services
Sudden weakness on one side	Stroke	Call emergency services
Severe trouble breathing	Asthma attack, heart failure, pneumonia, pulmonary embolism	Call emergency services
Uncontrolled bleeding	Major blood loss	Call emergency services
Sudden severe headache	Subarachnoid hemorrhage, stroke, meningitis	Call emergency services
Fever with stiff neck	Meningitis	Emergency evaluation
Vomiting blood	Gastrointestinal bleeding	Emergency evaluation
Severe allergic reaction	Anaphylaxis	Use epinephrine if prescribed and call emergency services
Suicidal thoughts with plan	Mental health emergency	Call emergency services or crisis line
New confusion in older adult	Infection, stroke, medication problem, metabolic problem	Urgent medical evaluation

Summary

When to call a doctor is an important patient safety topic. Patients should call emergency services for life-threatening symptoms such as severe chest pain, severe shortness of breath, stroke symptoms, uncontrolled bleeding, severe allergic reaction, poisoning, loss of consciousness, or suicidal danger. A doctor should be called promptly for symptoms that are worsening, persistent, unusual, associated with high-risk medical conditions, or not responding to home care. Routine appointments are appropriate for stable concerns, preventive care, and chronic disease follow-up. When uncertain, patients should seek medical advice rather than delay needed care.

See also

• Medical emergency
• Emergency medicine
• Emergency department
• Urgent care
• Primary care
• Primary care physician
• Family medicine
• Internal medicine
• Pediatrics
• Telemedicine
• Patient safety
• Patient education
• Preventive medicine
• Medication safety
• Chest pain
• Shortness of breath
• Stroke
• Heart attack
• Fever
• Abdominal pain
• Headache
• Allergic reaction
• Anaphylaxis
• Poisoning
• Mental health crisis
• Suicide prevention
• Chronic disease
• Diabetes mellitus
• Hypertension
• Asthma
• Chronic obstructive pulmonary disease

External links

• MedlinePlus: Recognizing medical emergencies
• MedlinePlus: When to use the emergency room
• American Heart Association: When to call 911
• Mayo Clinic Symptom Checker
• 988 Suicide & Crisis Lifeline

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