Immunodeficiency: Difference between revisions
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[[File: | {{Infobox medical condition | ||
| name = Immunodeficiency | |||
| image = [[File:PDB_4fiv_EBI.jpg|250px]] | |||
| caption = Structural representation of a protein involved in immunodeficiency | |||
| field = [[Immunology]] | |||
| synonyms = Immune deficiency | |||
| symptoms = Increased susceptibility to [[infection]], [[autoimmune disease]] | |||
| complications = [[Chronic infection]], [[cancer]] | |||
| onset = Varies depending on type | |||
| duration = Long-term | |||
| types = [[Primary immunodeficiency]], [[Secondary immunodeficiency]] | |||
| causes = Genetic factors, [[HIV/AIDS]], [[malnutrition]], [[chemotherapy]] | |||
| risks = Family history, [[HIV]] exposure, certain medications | |||
| diagnosis = [[Blood test]], [[genetic testing]], [[immunological assay]] | |||
| differential = [[Autoimmune disease]], [[allergy]], [[chronic fatigue syndrome]] | |||
| treatment = [[Immunoglobulin therapy]], [[antibiotics]], [[antiviral drugs]], [[bone marrow transplant]] | |||
| medication = [[Antibiotics]], [[antivirals]], [[immunosuppressants]] | |||
| prognosis = Varies; some conditions are manageable, others can be life-threatening | |||
| frequency = Varies widely; primary immunodeficiencies are rare | |||
| deaths = Depends on type and treatment availability | |||
}} | |||
'''Immunodeficiency''' refers to the inability of the [[Immune System|immune system]] to properly defend the body against disease-causing organisms or pathogens, leading to an increased susceptibility to infections. This condition can be congenital or acquired and varies in severity from mild to life-threatening. | '''Immunodeficiency''' refers to the inability of the [[Immune System|immune system]] to properly defend the body against disease-causing organisms or pathogens, leading to an increased susceptibility to infections. This condition can be congenital or acquired and varies in severity from mild to life-threatening. | ||
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== Introduction == | |||
== | |||
The immune system is a complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, such as bacteria, viruses, fungi, and parasites. When this system is deficient or does not function properly, it results in an immunodeficiency disorder. | The immune system is a complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, such as bacteria, viruses, fungi, and parasites. When this system is deficient or does not function properly, it results in an immunodeficiency disorder. | ||
== Types of Immunodeficiency == | == Types of Immunodeficiency == | ||
There are two main types of immunodeficiency disorders: | There are two main types of immunodeficiency disorders: | ||
=== Primary Immunodeficiency === | === Primary Immunodeficiency === | ||
* '''[[Primary Immunodeficiency|Primary or Congenital Immunodeficiency]]''' disorders are typically present from birth and are caused by genetic defects. Examples include: | * '''[[Primary Immunodeficiency|Primary or Congenital Immunodeficiency]]''' disorders are typically present from birth and are caused by genetic defects. Examples include: | ||
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** [[Common Variable Immunodeficiency (CVID)]] - A disorder characterized by low levels of serum immunoglobulins. | ** [[Common Variable Immunodeficiency (CVID)]] - A disorder characterized by low levels of serum immunoglobulins. | ||
** [[DiGeorge Syndrome]] - A condition caused by the deletion of a part of chromosome 22, leading to poor development of the immune system. | ** [[DiGeorge Syndrome]] - A condition caused by the deletion of a part of chromosome 22, leading to poor development of the immune system. | ||
=== Secondary or Acquired Immunodeficiency === | === Secondary or Acquired Immunodeficiency === | ||
* '''[[Secondary immunodeficiency|Secondary or Acquired Immunodeficiency]]''' occurs later in life and can be due to various factors such as infections, malnutrition, aging, or as a side effect of treatments like chemotherapy. | * '''[[Secondary immunodeficiency|Secondary or Acquired Immunodeficiency]]''' occurs later in life and can be due to various factors such as infections, malnutrition, aging, or as a side effect of treatments like chemotherapy. | ||
** [[Acquired Immunodeficiency Syndrome (AIDS)]] - Caused by the [[Human Immunodeficiency Virus (HIV)]] that attacks and weakens the immune system. | ** [[Acquired Immunodeficiency Syndrome (AIDS)]] - Caused by the [[Human Immunodeficiency Virus (HIV)]] that attacks and weakens the immune system. | ||
== Causes == | == Causes == | ||
Causes of immunodeficiency include, but are not limited to: | Causes of immunodeficiency include, but are not limited to: | ||
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* Chronic diseases | * Chronic diseases | ||
* Medications that suppress the immune system | * Medications that suppress the immune system | ||
== Symptoms and Diagnosis == | == Symptoms and Diagnosis == | ||
Symptoms of immunodeficiency can vary but may include: | Symptoms of immunodeficiency can vary but may include: | ||
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* Delayed growth or development in children | * Delayed growth or development in children | ||
* Autoimmune disorders | * Autoimmune disorders | ||
Diagnosis often involves: | Diagnosis often involves: | ||
* Blood tests to measure immune cell counts | * Blood tests to measure immune cell counts | ||
* Immunoglobulin level testing | * Immunoglobulin level testing | ||
* Genetic testing to identify underlying genetic causes | * Genetic testing to identify underlying genetic causes | ||
== Treatment == | == Treatment == | ||
Treatment depends on the type and severity of the immunodeficiency and may include: | Treatment depends on the type and severity of the immunodeficiency and may include: | ||
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* [[Bone Marrow Transplant]] or stem cell transplant for certain types of primary immunodeficiency | * [[Bone Marrow Transplant]] or stem cell transplant for certain types of primary immunodeficiency | ||
* [[Gene Therapy]], which is a growing area of research for treating genetic causes of immunodeficiency | * [[Gene Therapy]], which is a growing area of research for treating genetic causes of immunodeficiency | ||
== Living with Immunodeficiency == | == Living with Immunodeficiency == | ||
Patients with immunodeficiency disorders often need to take special precautions to avoid infections, such as practicing good hygiene, avoiding contact with sick individuals, and staying up-to-date with vaccinations. | Patients with immunodeficiency disorders often need to take special precautions to avoid infections, such as practicing good hygiene, avoiding contact with sick individuals, and staying up-to-date with vaccinations. | ||
== See Also == | == See Also == | ||
* [[Immune System]] | * [[Immune System]] | ||
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* [[Vaccination]] | * [[Vaccination]] | ||
* [[Hematopoietic Stem Cell Transplantation]] | * [[Hematopoietic Stem Cell Transplantation]] | ||
[[Category:Immunology]] | [[Category:Immunology]] | ||
[[Category:Diseases and Disorders]] | [[Category:Diseases and Disorders]] | ||
[[Category:Immunodeficiency]] | [[Category:Immunodeficiency]] | ||
{{stub}} | {{stub}} | ||
Revision as of 03:58, 6 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
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| Immunodeficiency | |
|---|---|
| File:PDB 4fiv EBI.jpg | |
| Synonyms | Immune deficiency |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Increased susceptibility to infection, autoimmune disease |
| Complications | Chronic infection, cancer |
| Onset | Varies depending on type |
| Duration | Long-term |
| Types | Primary immunodeficiency, Secondary immunodeficiency |
| Causes | Genetic factors, HIV/AIDS, malnutrition, chemotherapy |
| Risks | Family history, HIV exposure, certain medications |
| Diagnosis | Blood test, genetic testing, immunological assay |
| Differential diagnosis | Autoimmune disease, allergy, chronic fatigue syndrome |
| Prevention | N/A |
| Treatment | Immunoglobulin therapy, antibiotics, antiviral drugs, bone marrow transplant |
| Medication | Antibiotics, antivirals, immunosuppressants |
| Prognosis | Varies; some conditions are manageable, others can be life-threatening |
| Frequency | Varies widely; primary immunodeficiencies are rare |
| Deaths | Depends on type and treatment availability |
Immunodeficiency refers to the inability of the immune system to properly defend the body against disease-causing organisms or pathogens, leading to an increased susceptibility to infections. This condition can be congenital or acquired and varies in severity from mild to life-threatening.
Introduction
The immune system is a complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, such as bacteria, viruses, fungi, and parasites. When this system is deficient or does not function properly, it results in an immunodeficiency disorder.
Types of Immunodeficiency
There are two main types of immunodeficiency disorders:
Primary Immunodeficiency
- Primary or Congenital Immunodeficiency disorders are typically present from birth and are caused by genetic defects. Examples include:
- Severe Combined Immunodeficiency (SCID) - A serious condition in which the patient has very few or no immune cells.
- Common Variable Immunodeficiency (CVID) - A disorder characterized by low levels of serum immunoglobulins.
- DiGeorge Syndrome - A condition caused by the deletion of a part of chromosome 22, leading to poor development of the immune system.
Secondary or Acquired Immunodeficiency
- Secondary or Acquired Immunodeficiency occurs later in life and can be due to various factors such as infections, malnutrition, aging, or as a side effect of treatments like chemotherapy.
- Acquired Immunodeficiency Syndrome (AIDS) - Caused by the Human Immunodeficiency Virus (HIV) that attacks and weakens the immune system.
Causes
Causes of immunodeficiency include, but are not limited to:
- Genetic mutations
- Environmental factors
- Chronic diseases
- Medications that suppress the immune system
Symptoms and Diagnosis
Symptoms of immunodeficiency can vary but may include:
- Recurrent infections
- Infections that are more severe than usual
- Delayed growth or development in children
- Autoimmune disorders
Diagnosis often involves:
- Blood tests to measure immune cell counts
- Immunoglobulin level testing
- Genetic testing to identify underlying genetic causes
Treatment
Treatment depends on the type and severity of the immunodeficiency and may include:
- Antibiotics or antifungal medications to treat and prevent infections
- Immunoglobulin Therapy to boost the immune system
- Bone Marrow Transplant or stem cell transplant for certain types of primary immunodeficiency
- Gene Therapy, which is a growing area of research for treating genetic causes of immunodeficiency
Living with Immunodeficiency
Patients with immunodeficiency disorders often need to take special precautions to avoid infections, such as practicing good hygiene, avoiding contact with sick individuals, and staying up-to-date with vaccinations.
