Cholinergic urticaria: Difference between revisions
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{{Infobox medical condition | |||
| name = Cholinergic urticaria | |||
| image = [[File:A_male_displaying_cholinergic_urticaria_on_the_volar_aspect_of_the_forearm.jpg|250px]] | |||
| caption = A male displaying cholinergic urticaria on the volar aspect of the forearm | |||
| field = [[Dermatology]] | |||
| synonyms = Heat bumps, heat hives | |||
| symptoms = [[Itching]], [[redness]], small [[hives]] | |||
| onset = [[Adolescence]] or [[early adulthood]] | |||
| duration = [[Chronic]] | |||
| causes = [[Heat]], [[exercise]], [[stress]], [[hot showers]] | |||
| risks = [[Atopic dermatitis]], [[asthma]], [[allergic rhinitis]] | |||
| diagnosis = [[Clinical diagnosis]], [[provocation test]] | |||
| differential = [[Urticaria]], [[exercise-induced anaphylaxis]], [[mastocytosis]] | |||
| treatment = [[Antihistamines]], [[cooling measures]], [[avoidance of triggers]] | |||
| frequency = Common in young adults | |||
}} | |||
= Cholinergic Urticaria = | = Cholinergic Urticaria = | ||
[[File:Cholinergic urticaria.jpg|left|thumb|Cholinergic Urticaria rash]] | |||
[[File:Cholinergic urticaria.jpg|thumb|Cholinergic Urticaria rash]] | |||
== Introduction == | == Introduction == | ||
Cholinergic Urticaria (CU) is a type of [[Urticaria|hives]] associated with increased core body temperature and sweating. It is a physical urticaria triggered by activities that raise body temperature, such as exercise, hot showers, or emotional stress. | Cholinergic Urticaria (CU) is a type of [[Urticaria|hives]] associated with increased core body temperature and sweating. It is a physical urticaria triggered by activities that raise body temperature, such as exercise, hot showers, or emotional stress. | ||
== Pathophysiology == | == Pathophysiology == | ||
CU is believed to result from hypersensitivity to acetylcholine, a neurotransmitter involved in stimulating sweat glands. This hypersensitivity leads to histamine release from mast cells, causing the characteristic hives and itching. | CU is believed to result from hypersensitivity to acetylcholine, a neurotransmitter involved in stimulating sweat glands. This hypersensitivity leads to histamine release from mast cells, causing the characteristic hives and itching. | ||
== Clinical Features == | == Clinical Features == | ||
CU presents as small, itchy wheals surrounded by large areas of redness. These typically appear on the trunk and arms and are often associated with sweating or overheating. Patients may also experience accompanying symptoms like headache, salivation, palpitations, or gastrointestinal discomfort. | CU presents as small, itchy wheals surrounded by large areas of redness. These typically appear on the trunk and arms and are often associated with sweating or overheating. Patients may also experience accompanying symptoms like headache, salivation, palpitations, or gastrointestinal discomfort. | ||
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== Diagnosis == | == Diagnosis == | ||
Diagnosis of CU is primarily clinical, based on history and presentation. [[Dermatologic testing|Dermatological tests]], such as the exercise challenge or the hot water immersion test, can be used to provoke symptoms under controlled conditions. | Diagnosis of CU is primarily clinical, based on history and presentation. [[Dermatologic testing|Dermatological tests]], such as the exercise challenge or the hot water immersion test, can be used to provoke symptoms under controlled conditions. | ||
== Management and Treatment == | == Management and Treatment == | ||
Treatment of CU involves both symptomatic relief and avoidance of triggers. Antihistamines, particularly H1-receptor antagonists, are the mainstay of pharmacological treatment. Lifestyle modifications, such as avoiding triggers and maintaining a cool environment, are also crucial. | Treatment of CU involves both symptomatic relief and avoidance of triggers. Antihistamines, particularly H1-receptor antagonists, are the mainstay of pharmacological treatment. Lifestyle modifications, such as avoiding triggers and maintaining a cool environment, are also crucial. | ||
== Epidemiology == | == Epidemiology == | ||
CU is more common in young adults, with a peak incidence in the second and third decades of life. It affects both genders, though some studies suggest a slightly higher prevalence in males. | CU is more common in young adults, with a peak incidence in the second and third decades of life. It affects both genders, though some studies suggest a slightly higher prevalence in males. | ||
== Prognosis == | == Prognosis == | ||
The course of CU is highly variable. In some patients, symptoms may resolve spontaneously over time, while in others, the condition may persist for years. | The course of CU is highly variable. In some patients, symptoms may resolve spontaneously over time, while in others, the condition may persist for years. | ||
== References == | == References == | ||
# Zuberbier, T., Aberer, W., Asero, R., et al. (2018). The EAACI/ | # Zuberbier, T., Aberer, W., Asero, R., et al. (2018). The EAACI/GA²LEN/EDF/WAO Guideline for the definition, classification, diagnosis, and management of urticaria. Allergy, 73(7), 1393-1414. | ||
# Maurer, M., Weller, K., Bindslev-Jensen, C., et al. (2011). Unmet clinical needs in chronic spontaneous urticaria. A | # Maurer, M., Weller, K., Bindslev-Jensen, C., et al. (2011). Unmet clinical needs in chronic spontaneous urticaria. A GA²LEN task force report. Allergy, 66(3), 317-330. | ||
== See Also == | == See Also == | ||
* [[Urticaria]] | * [[Urticaria]] | ||
* [[Allergy]] | * [[Allergy]] | ||
* [[Dermatology]] | * [[Dermatology]] | ||
[[Category:Dermatology]] | [[Category:Dermatology]] | ||
[[Category:Allergology]] | [[Category:Allergology]] | ||
[[Category:Autoimmune diseases]] | [[Category:Autoimmune diseases]] | ||
{{stub}} | {{stub}} | ||
Latest revision as of 01:57, 5 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's medical weight loss NYC, sleep center NYC
Philadelphia medical weight loss and Philadelphia sleep clinics
| Cholinergic urticaria | |
|---|---|
| File:A male displaying cholinergic urticaria on the volar aspect of the forearm.jpg | |
| Synonyms | Heat bumps, heat hives |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Itching, redness, small hives |
| Complications | N/A |
| Onset | Adolescence or early adulthood |
| Duration | Chronic |
| Types | N/A |
| Causes | Heat, exercise, stress, hot showers |
| Risks | Atopic dermatitis, asthma, allergic rhinitis |
| Diagnosis | Clinical diagnosis, provocation test |
| Differential diagnosis | Urticaria, exercise-induced anaphylaxis, mastocytosis |
| Prevention | N/A |
| Treatment | Antihistamines, cooling measures, avoidance of triggers |
| Medication | N/A |
| Prognosis | N/A |
| Frequency | Common in young adults |
| Deaths | N/A |
Cholinergic Urticaria[edit]
Introduction[edit]
Cholinergic Urticaria (CU) is a type of hives associated with increased core body temperature and sweating. It is a physical urticaria triggered by activities that raise body temperature, such as exercise, hot showers, or emotional stress.
Pathophysiology[edit]
CU is believed to result from hypersensitivity to acetylcholine, a neurotransmitter involved in stimulating sweat glands. This hypersensitivity leads to histamine release from mast cells, causing the characteristic hives and itching.
Clinical Features[edit]
CU presents as small, itchy wheals surrounded by large areas of redness. These typically appear on the trunk and arms and are often associated with sweating or overheating. Patients may also experience accompanying symptoms like headache, salivation, palpitations, or gastrointestinal discomfort.
Diagnosis[edit]
Diagnosis of CU is primarily clinical, based on history and presentation. Dermatological tests, such as the exercise challenge or the hot water immersion test, can be used to provoke symptoms under controlled conditions.
Management and Treatment[edit]
Treatment of CU involves both symptomatic relief and avoidance of triggers. Antihistamines, particularly H1-receptor antagonists, are the mainstay of pharmacological treatment. Lifestyle modifications, such as avoiding triggers and maintaining a cool environment, are also crucial.
Epidemiology[edit]
CU is more common in young adults, with a peak incidence in the second and third decades of life. It affects both genders, though some studies suggest a slightly higher prevalence in males.
Prognosis[edit]
The course of CU is highly variable. In some patients, symptoms may resolve spontaneously over time, while in others, the condition may persist for years.
References[edit]
- Zuberbier, T., Aberer, W., Asero, R., et al. (2018). The EAACI/GA²LEN/EDF/WAO Guideline for the definition, classification, diagnosis, and management of urticaria. Allergy, 73(7), 1393-1414.
- Maurer, M., Weller, K., Bindslev-Jensen, C., et al. (2011). Unmet clinical needs in chronic spontaneous urticaria. A GA²LEN task force report. Allergy, 66(3), 317-330.
