light sensitivity test

The light sensitivity test is a test for sensitivity to sunlight and is a test for the intensity of the immune system response to sunlight. Light-sensitive causes common photo-sensitive dermatitis including solar urticaria, chemophoto-sensitive dermatitis, and pleomorphic sun rash, characterized by a pruritic sudden rash that is exposed to sunlight. This light-sensitive body can be inherited. General diseases such as systemic lupus erythematosus and polyporphyria can also occur after exposure to sunlight. Basic Information Specialist classification: skin examination classification: pathological examination Applicable gender: whether men and women apply fasting: not fasting Tips: Avoid exposure to a lot of UV rays before eating or use some sensitive vegetables for a long time in the sun. Avoid using cosmetics that cause phototoxic dermatitis. Do not eat drugs that cause phototoxicity. Normal value Under normal circumstances, people who have been exposed to sunlight for a long period of time have a burning sensation, and severe is a slight skin problem. If a series of serious skin problems are caused, what is the skin is not in the normal range. Clinical significance Abnormal result Solar urticaria, dermatitis, pruritic sudden rash, loose skin, dry, rough, wrinkles or deep wrinkles, skin keratin hyperplasia, cell atrophy, telangiectasia, etc. People who need to be examined: people suspected of having photosensitive dermatitis. Precautions Forbidden before inspection: Avoid contact with a large amount of ultraviolet light or eat some sensitive vegetables for a long time in the sun. Some things in life may increase the body's absorption of ultraviolet light and should be avoided as much as possible. Avoid using cosmetics that cause phototoxic dermatitis. Do not eat drugs that cause phototoxicity. Requirements for inspection: Actively cooperate with the doctor. Inspection process Phototoxic dermatitis is a localized flaky erythema with a burning sensation or pain. In severe cases, edema and blisters may occur or conjunctivitis and systemic symptoms such as headache, dizziness, fatigue, thirst, and nausea may occur. Can be diagnosed if: 1 Before the onset, there is a certain amount of occupational exposure history of photosensitive substances, and it is exposed to sunlight of a certain intensity and time. 2 Skin lesions occur in areas that come into contact with photosensitizing materials and are exposed to sunlight. 3 The same type of work, the majority of people under the same conditions. 4 Skin lesions originate within a few hours after exposure to sunlight. 5 After disengaging from the photosensitizing substance or avoiding sunlight, the dermatitis subsides faster, and localized pigmentation can be left in different degrees. 6 If necessary, you can do a spot patch test, which is a sunburn-like reaction. Not suitable for the crowd Patients with systemic lupus erythematosus and polyporphyria. Adverse reactions and risks Generally no adverse reactions.

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