A 40-year-old member asked:
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what is a solar urticaria allergy?

2 doctor answers
Dr. Madhukar Punja
Specializes in Allergy and Immunology
Allergy to sun: Its a type of urticaria (hives) triggered by sun's uv rays. It is a rare condition and can cause severe discomfort to individuals with this condition when they go out in the sun. The exposed skin breaks out in red raised bumps with severe itching lasting for several hours. Sunblocks, antihistamines and limiting the time of exposure to sun can alleviate this condition.
Answered on Sep 28, 2016
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1 thank
Dr. Michael Zacharisen
32 years experience Allergy and Immunology
Very rare: Solar urticaria is a rare type of physical urticaria or hives. The hives in this case are induced when the skin is exposed to certain wavelengths of light. It primarily affects exposed skin but hives can be seen other places. The exact mechanism is unknown. Usually if a skin reaction occurs after exposure to sunlight, a photo-allergic or photo-toxic reaction involving a medication is sought.
Answered on Dec 9, 2012

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Related questions:

A 41-year-old member asked:
Dr. Morris Westfried
45 years experience Dermatology
Betacarotene: Sun avoidance, betacarotene orally, and oral antihistamines. If severe steroids.
A 23-year-old member asked:
Dr. Tsu-Yi Chuang
49 years experience Dermatology
Sunblocker: If truly it's caused by sun, sunblockers might help, favoring the ones can block uva. Antihistamines might be used to relieve the symptoms.
A 50-year-old member asked:
Dr. Madhukar Punja
Specializes in Allergy and Immunology
Itchy hives: Upon exposure to sun's rays the exposed skin breaks out in red raised bumps (hives) with severe itching lasting for several hours.
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A 36-year-old member asked:
Dr. Morris Westfried
45 years experience Dermatology
Yes: It does but you need to limit sun exposure and treat symptoms with antihistamines.

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