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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Reddish Purple Rash On Thighs?

My daughter has developed a redish purple rash on both thighs...this rash itches and them appears bruised. SHe is low in calcium and foloc acid....she has lost weight without trying to Im worried? Doctors say they have not seen a rash like this before
Thu, 1 Dec 2022
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Anesthesiologist,  's  Response
Hello,

Rash on the thigh may be due to the following conditions:
1) Atopic dermatitis
2) Chafing
3) Allergic contact dermatitis
4) Heat rash
5) Pityriasis rosea
6) Swimmers itch or cercarial dermatitis

Treatment depends on the cause of the rash. Please discuss about above mentioned conditions with your dermatologist. Until you consult a dermatologist, the following treatment can be useful:
1) Calamine lotion on the rash
2) Antihistamines to reduce itching can be taken like tab. Benadryl or tab. Cetirizine twice daily.
3) Avoiding contact with any allergens.
4) Topical Hydrocortisone 1% cream to be applied on rash.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Pallavi M., Anesthesiologist
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What Causes Reddish Purple Rash On Thighs?

Hello, Rash on the thigh may be due to the following conditions: 1) Atopic dermatitis 2) Chafing 3) Allergic contact dermatitis 4) Heat rash 5) Pityriasis rosea 6) Swimmers itch or cercarial dermatitis Treatment depends on the cause of the rash. Please discuss about above mentioned conditions with your dermatologist. Until you consult a dermatologist, the following treatment can be useful: 1) Calamine lotion on the rash 2) Antihistamines to reduce itching can be taken like tab. Benadryl or tab. Cetirizine twice daily. 3) Avoiding contact with any allergens. 4) Topical Hydrocortisone 1% cream to be applied on rash. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Pallavi M., Anesthesiologist