Hello dear I understand your concern Rash in the leg could be due to contact dermatitis/eczema, lichen planus, psoriasis. I would suggest to consult the dermatologist and undergo detailed examination and skin biopsy to confirm the cause. Doctor will give following advises Topical steroid ointment Topical benadryl cream Topical application of immuno suppressant after confirming the diagnosis. Maintain proper pelvic hygiene, drink plenty of water, take healthy diet. Hope this may help you Best regards Dr. Sagar