Symptoms of hot urticaria?

summary

Hot urticaria refers to local urticaria induced by skin exposure to temperature above 43 ℃. It can be divided into localized and delayed familial localized hot urticaria. Localized hot urticaria is acquired localized hot urticaria. Delayed familial localized febrile urticaria is a chromosomal dominant inheritance with delayed local response to heat. Symptoms of hot urticaria? Let's talk about it

Symptoms of hot urticaria?

A few minutes after stimulation, a round papular wheal with a diameter of 2-4mm appeared, surrounded by varying degrees of red halo, often distributed in the upper trunk and upper limbs, and did not fuse with each other. Pruritus, tingling or burning sensation,

Sometimes only itching and no skin lesions, and 0.5 to 1 hour subsided. Mild cholinergic urticaria can occur in adolescence of ordinary people. Generally, the symptoms can subside after stopping exercise or calming down, so it is not easy to cause attention.

Occasionally accompanied by systemic symptoms caused by acetylcholine (such as salivation, headache, bradycardia, mydriasis and spastic abdominal pain, diarrhea), etc., severe dizziness can cause syncope. In the skin test or scratch test with 1:5000 acetylcholine, wheal appeared at the injection site and satellite like wheal appeared around.

matters needing attention

Once a rash is found on the palms and soles of the hands and feet, it means that the rash is complete and the patient is in the recovery period. If the patient has persistent high fever, shortness of breath, aggravation of cough, agitation of nasal wings, purplish red mouth, cold limbs, weak pulse, accelerated heart rate, regression or incomplete rash, hoarseness, wheezing cough, drowsiness or convulsion, it means that the patient has other complications and should be sent to the hospital for treatment immediately. Parents should pay more attention to the observation of children's condition, Prevent delay in treatment