What could be the cause of a red itchy rash on the legs after walking through the field?

Hello,

Welcome to icliniq.com.

I have seen your query and understood your concern.

I went through your images (the attachments removed to protect the patient's identity).

It seems you have allergic contact dermatitis or air-borne contact dermatitis. Allergic contact dermatitis may occur due to footwear, cosmetics, hair dyes, pollens, parthenium grass in surrounding fields, dust or mites, etc.

Pollen and other air-borne allergens mainly affect the face, eyes, ‘V’ of the neck and other uncovered areas of the body besides other body parts. Air-borne contact dermatitis (ABCD) is the name given to this group of dermatitis.

The diagnosis of allergic contact dermatitis can be established by doing a ‘patch’ test, in which patches of suspected allergens in appropriate concentrations are put on the nonhairy skin of the back or arms, and readings are taken after 48 to 72 hours.

Positive patch test reaction is indicated by redness, fluid-filled eruptions, or ulceration at the site of the test. A topical soothing lotion like Calamine (anti-inflammatory) would help you symptomatically but you may require systemic steroids for a short duration.

I suggest you consult a specialist doctor and take medications with their consent.

Hope it helps.

Thanks and regards.