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Cholinergic urticaria

What is cholinergic? urticaria?

Cholinergic urticaria is common. chronic inducible hives caused by sweating. Sometimes it is known as heat stroke. Cold urticaria presents with very small (1–4 mm) cure surrounded by bright red sparkles.

Cholinergic urticaria is also known as cholinergic angioedema hives and heat strokes.

What causes cholinergic urticaria?

An increase in core body temperature resulting in sweating causes eruption in cholinergic urticaria Common triggers include:

  • Exercise
  • Hot baths / showers
  • Fever
  • Occlusive dressings
  • Eating spicy foods
  • Emotional stress.

It is not uncommon for patients with cholinergic urticaria to have another associated physical urticaria, such as dermographism, cold urticaria, or pressure urticaria.

What are the clinical characteristics of cholinergic urticaria?

The rash appears quickly, usually within a few minutes of sweating, and can last from 30 minutes to an hour or more before disappearing. The average duration is about 80 minutes. Typical signs and symptoms of the rash include:

  • Itching, burning, tingling, warm feeling that precedes the appearance of numerous small scars with surrounding bright red shoots.
  • The rash is usually itchy.
  • The rash can appear anywhere on the body, but is most prominent on the upper trunk and arms. It rarely affects the palms, soles, or armpits.
  • Sometimes the small scars come together to form a large swelling.
  • Patients who are most severely affected may experience systemic symptoms such as headaches, salivation, palpitations, fainting, shortness of breath, wheezing, abdominal cramps, and diarrhea
  • Rarely, patients with cholinergic urticaria may have more severe reactions, such as anaphylaxis you probably shouldn't be exercising alone.
Cholinergic urticaria


Cholinergic urticaria


Cholinergic urticaria


Cholinergic urticaria

Who gets cholinergic urticaria?

People who are more likely to suffer from cholinergic urticaria include:

  • Those who already suffer from generalized chronic urticaria
  • People with asthma, rhinitis and atopic dermatitis (eczema)

It occurs in both men and women, but is more common in men than women. The condition tends to appear for the first time in people between the ages of 10 and 30 and persists for several years before it becomes less severe or disappears entirely. The natural course of cholinergic urticaria is quite variable, and most patients experience slow resolution over several years.

What is the treatment for cholinergic urticaria?

Once the cause of the rash is identified, you can avoid situations that trigger it. However, in many cases it is difficult to stop sweating, particularly in hot weather and if exercise is part of a daily routine. Sometimes rapid cooling can prevent an attack. For the majority of patients, regular administration of an oral antihistamine such as cetirizine may be helpful in preventing the onset of the condition. Beta-blockers like propranolol have also been reported to be helpful.