Hello and Welcome to Ask A Doctor service. I have reviewed your query and here is my advice. Perhaps it is either a fungal infection or it could be an eczema patch. A fungal infection is usually a ring shaped peripherally expanding lesion with central clearing and raised, red, scaly margins whereas a chronic eczema patch is dry, red and scaly throughout. For a fungal infection I would usually suggest an OTC topical antifungal e.g clotrimazole 1% cream, whereas for an eczema patch, a moisturizer along with a topical steroid cream would usually work. Apart from specific therapy you may also take an oral antihistamine e.g cetrizine 10mg tablet for symptomatic relief. Hope I have answered your query Let me know if you need any more assistance