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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Red Blotches On The Arms?

I developed a rash (red splotches) beginning on my arms, one or two at a time, after my doctor increased my potassium dosage from one potassium CL ER 10 meq ta, to two, and finally three tables a day. This began about a week or so after I began taking 3 tablets daily. Could the rash be from too much potassium? She has since lowered my dosage back to 2 tablets daily but I am still getting the red splotches and they itch quite a lot.
posted on Thu, 9 Mar 2017
Twitter Wed, 4 Oct 2017 Answered on
Twitter Thu, 5 Oct 2017 Last reviewed on
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Dermatologist,  's  Response
Hi.
As per your case history you are having allergic dermatitis. It is not related to potassium.
My treatment advice is -
1. Avoid using any new products like soap or perfume.
2. Apply a mild topical steroid cream like mometasone cream on the lesions twice daily.
3. Take an antihistamine medication like levocetrizine twice daily for 7-10 days.
4. Other treatment options are oral steroid like prednisone or betamethasone taken only after consulting a dermatologist.

Thanks.
Dr. Harshit bhachech.
MBBS, DDVL.
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What Causes Red Blotches On The Arms?

Hi. As per your case history you are having allergic dermatitis. It is not related to potassium. My treatment advice is - 1. Avoid using any new products like soap or perfume. 2. Apply a mild topical steroid cream like mometasone cream on the lesions twice daily. 3. Take an antihistamine medication like levocetrizine twice daily for 7-10 days. 4. Other treatment options are oral steroid like prednisone or betamethasone taken only after consulting a dermatologist. Thanks. Dr. Harshit bhachech. MBBS, DDVL.