It's hot. What should I do if it itches?

According to your description, it may be cholinergic urticaria, which belongs to a rash that people often say. When you are heated, nervous, eating hot food or drink, or after exercise, your body temperature rises slightly. The heated blood flow stimulates the brain's thermoregulatory center, excites cholinergic nerves and releases acetylcholine. If you are allergic to this chemical, you may have an allergic reaction.

cholinergic urticaria

Cholinergic urticaria is a kind of rash that people often say. When you are hot, nervous, eating hot food or drink, or after exercise, your body temperature rises slightly. The heated blood flow stimulates the brain's thermoregulatory center, excites cholinergic nerves and releases acetylcholine. It is precisely because people are allergic to acetylcholine that we call the symptoms caused by allergies cholinergic urticaria.

Symptomatic characteristics of cholinergic urticaria

① There will be no rash, but you obviously feel acupuncture and itching.

② It mostly happens in youth, usually after encountering high temperature (hot drinks, hot baths), emotional excitement and exercise. When you stop exercising or calm down, the symptoms will subside. In severe cases, symptoms may take months or years to completely subside.

(3) Red wind masses of about 2 mm often appear on the skin of the trunk and proximal limbs (except armpits, palms and soles), which come and go quickly and leave no trace. Severe cases may be accompanied by digestive tract symptoms, such as abdominal pain and diarrhea.

Most of them occur in youth, and appear after encountering heat (hot drinks, hot baths), emotional excitement and exercise. The rash is characterized by a small wind mass of 1~3 mm, with redness around it, mostly at the proximal end of trunk and limbs, fatigue and itching. Some patients have digestive tract symptoms, such as abdominal pain and diarrhea.

Treatment of cholinergic urticaria

general treatment

At present, western medicine has no specific treatment for urticaria, and most of them are oral antihistamines and corticosteroids, such as oral western medicine, oral hormones, lotion for external use, emulsion, mud paste, oil, ointment, emulsion, film coating agent, tincture, plaster and so on. Long-term or high-dose topical use of corticosteroids can lead to addiction and drug dependence. The most common thing is that the condition gets better after taking the medicine. Once the medicine is stopped, the primary disease of the medication site gets worse. When the hormone is used again, the above situation improves or disappears; If the drug is stopped again, the rebound will recur and be more serious than before.

In order to avoid the pain after stopping taking drugs, patients are totally dependent on hormones. The skin will obviously become thinner, the capillaries will dilate, and sometimes purpura will appear, especially on the face, which can cause deep persistent erythema. The longer the hormone is used, the heavier the rebound allergy will be. Can make the skin thinner, fragile, atrophic, telangiectasia, purpura, fungal infection, acne-like dermatitis and so on. Become fragile; Mild hirsutism, hyperhidrosis, subcutaneous hemorrhage and difficulty in wound healing may also occur. Especially for some skin diseases, hormone preparations are not suitable.

Long-term or short-term high-dose injection or oral administration of corticosteroids such as dexamethasone, Kangning Ke Tong and prednisone can also cause obesity, hirsutism, acne, hyperglycemia, hypertension, edema, hypokalemia, menstrual disorder, osteoporosis, aseptic osteonecrosis, gastric and duodenal ulcers and other complications. It can also cause certain damage to the kidney, such as aggravating glomerular disease proteinuria, aggravating glomerulosclerosis, easily causing renal calcification or calculus, inducing or aggravating renal infectious diseases, and causing hypokalemic nephropathy. It can also cause metabolic disorder of a series of substances such as sugar, protein, fat, water and electrolyte, destroy the body's defense system and inhibit immune response.

If some patients are dependent on corticosteroids during the treatment, the primary disease will rebound after stopping the drug, which will aggravate the secondary side effects and bring great pain to the patients. Family members of patients should do a good job in patients' ideological work, fully understand the role and side effects of hormones, and enhance their confidence in overcoming diseases. And in the correct choice of therapeutic drugs and gradually reduce until the cessation of corticosteroids, choose traditional Chinese medicine and methods to combat the above side effects and adverse reactions. Achieve the goal of safely and thoroughly curing diseases.

Better go to the hospital.