Seasonal light red patches

Introduction "Peach Blossom" is called "seasonal contact dermatitis" by Western medicine. The disease occurs in women's face, initially flushed or reddish like a coin-like patch, a few with a small red pimples, the border is unclear, with a small amount of scales. Conscious itch or dry discomfort. Sometimes accompanied by allergic rhinitis or other "allergic" medical history. Because it tends to spring, it can heal itself after the season, so the Chinese medicine is called "Peach Blossom". Pollen antigen is an important pathogenic factor of this disease, and its pathogenesis may be an IgE antibody-mediated skin delayed allergy caused by exposure to pollen antigens dispersed in the air. Chinese medicine believes that the disease is caused by heat in the lungs and stomach, and is caused by wind and heat.

Cause

Pollen antigen is an important pathogenic factor of this disease, and its pathogenesis may be an IgE antibody-mediated skin delayed allergy caused by exposure to pollen antigens dispersed in the air. Chinese medicine believes that the disease is caused by heat in the lungs and stomach, and is caused by wind and heat. For the cause, such as fasting and irritating food, avoiding wind and sun, disabling inferior moisturizers, regular life, limiting polylipid polysaccharide diet, avoiding alcohol and eating more fresh vegetables. In short, you can't use drugs. Can take oral vitamin B tablets, rub 5% sulfur ointment and so on.

an examination

Related inspection

Serum immunoglobulin E (IgE) blood routine

According to the seasonal incidence of the patient's spring, repeated occurrence, manifested as mild facial erythema, papules, scales, no clear history of exposure to sensitizing substances (patients often do not perceive which contact with allergens), can make a preliminary diagnosis. If it can be used for allergen testing, serum IgE determination is helpful for diagnosis.

Differential diagnosis

The disease should be differentiated from seborrheic dermatitis, cosmetic dermatitis, and solar dermatitis. Seborrheic dermatitis is also common in the head and face, with light red patches, more with greasy scales, four seasons can occur, no seasonality. Cosmetic dermatitis has a clear history of cosmetic application before the onset of the disease. The rash area is consistent with the cosmetic use site, the boundary is clear, and the positive test of the cosmetic patch is helpful for diagnosis. Solar dermatitis is a skin disease caused by UV allergy. It also has obvious seasonality. It often occurs in the spring or early summer season. The rash is found on the exposed parts of the face, upper chest, forearm and back of the hand. After sun exposure for 2 hours to 5 Skin lesions occur in the light part of the day to avoid the rash after sun exposure. Photoexcitation test or spot patch test is of great value for diagnosis.

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