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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Itchy Rashes On The Chest, Legs And Arms?

I have been experiencing a sunburn like hot rash every morning for past 3 weeks that comes on with tingling, starts on firearms but then covers face chest legs and feet, lasts 1/2 hour then fades. some itching with no rash rest of day. son has had one episode of same. I have fibro, raynauds and an autoimmune eye disease without name, he has autism. no new products, foods or supplements. can not determine cause and getting worse. worst one so far occurred at hotel today not at home. comes on after I am up 1.5 hours and is temporary.
posted on Wed, 22 Nov 2017
Twitter Thu, 15 Feb 2018 Answered on
Twitter Fri, 23 Feb 2018 Last reviewed on
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Pathologist and Microbiologist,  's  Response
I had gone through your medical presentations and understood your concerns. After carefully observing the nature of your symptoms, the probable cause of your condition may be sun allergy.

Sun allergy or photosensitivity is a very common abnormality seen in some patients. Sun allergies are triggered by changes that occur in sun exposed skin. Coming to your case, as you had autoimmune disease, immune system recognizes some components of the sun as foreign body and activates immune system against them. This produces an allergic reaction that takes the form of a rash or blisters.

You can confirm it by following:
1. skin biopsy, in which a small piece of skin is removed and examined
2. Blood tests to rule out systemic lupus erythematosus
3. Photo-testing, in which a small area of your skin is exposed to measured amounts of ultraviolet light

There is no need to worry but we should be careful while dealing with autoimmune diseases. Avoid exposure to sunlight and use corticosteroid cream. Hoping for a speedy recovery.
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What Causes Itchy Rashes On The Chest, Legs And Arms?

I had gone through your medical presentations and understood your concerns. After carefully observing the nature of your symptoms, the probable cause of your condition may be sun allergy. Sun allergy or photosensitivity is a very common abnormality seen in some patients. Sun allergies are triggered by changes that occur in sun exposed skin. Coming to your case, as you had autoimmune disease, immune system recognizes some components of the sun as foreign body and activates immune system against them. This produces an allergic reaction that takes the form of a rash or blisters. You can confirm it by following: 1. skin biopsy, in which a small piece of skin is removed and examined 2. Blood tests to rule out systemic lupus erythematosus 3. Photo-testing, in which a small area of your skin is exposed to measured amounts of ultraviolet light There is no need to worry but we should be careful while dealing with autoimmune diseases. Avoid exposure to sunlight and use corticosteroid cream. Hoping for a speedy recovery.