female pt aged about 45years presented with h/o mild itching over both lower limb only in winter season since 2yrs disappears in summer and hot weather. ?diagnosis and treatment

27 yr lady came with lesion.as shown in images.itching and swelling present.gradually it increasing in size.diagnosis and treatment plz??

A 26yr old male with the C/o itching and raised hyperpigmented lesion over the both the elbow and in axillary folds since 20days Not a Dm

18 years old girl c/o itching n dryness worse during winters. Present since as long as she remember. Normotensive, non diabetic, not on any medicine- no known allergy to anything.

A 65 yr old lady come in opd c/o itching Burning since 1 yr