Sunlight dermatitis

Sunlight dermatitis called polymorphous light eruption (polymorphous light eruption) is a common in young and middle-aged women-emotional skin, spring and summer styles, and often repeated. Is a T-cell-mediated delayed-allergic, but the exact allergenic unclear. Pathogenic spectrum of issues, which may affect UVA pathogenicity. Some patients have a family history of incidence. The disease often in the spring by the initial onset after strong sun. Bag is the face, neck, forearm extensor side, nails and other exposed parts of the appearance of erythema, papules, the wind or the blister-like rash, etc.. Pleomorphic refers to the rash of different patients often not the same, showing polymorphic, but a patient, rash is often form a single. Small papules and the most common herpes Venturi, a small number of patients showed erythema or edema plaque. Lesions with Japan meters irradiation closely related to each exposure, the lesions significantly increased itching intensified. Appropriate after dark there were improved. Skin rash often repeated attacks, can occur after prolonged moss-like change pigmentation. Generally fall gradually reduced recurrence of the spring of next year, sustainable years. [Diagnosis] 1. Sunlight exposure after onset, latency decided to sunlight intensity, having personal time and the sensitivity of the skin, usually in a few hours. 2. Basic damage to the large red patch, showed edema, sharp edge. Serious play blister. Subjective burning, sometimes even drama. A few days later, erythema and edema, followed by scaling, or temporary pigmentation. 3. Lesions occurring mainly in face, neck, hand, forearm and other parts exposed. 4. Generally no systemic symptoms, extensive damage can be associated with headache or fever. [Clinical] pure Chinese medicine treatment of 260 cases of the disease, all cured, the minimum seven days and the longest 15 days.