hi. i have read your question and understand your concern. the sites you have mentioned (wrists,feet and legs) are quite typical of lichen planus. its an autoimmune disorder. lichen planus presents as slightly raised purplish itchy lesions initially around wrists and ankles. i suggest you visit a dermatologist and get a confirmatory diagnosis. in case there is clinical dilemma a biopsy can be performed. biopsy is a small office procedure, done under local anesthetic. once the diagnosis is confirmed she can be started on mid potent steroids like mometasone cream along with antihistamines like cetrizine. sometimes systemic steroids may be needed. hope this helps. for any further questions please get back to us. thanks.