Hi, I can understand your concern for your mother s problem. After reading your history I can make out the possibility of Fungal infection of the area. If this is raised and causing flaking with maceration of skin along with map like appearance then this is the best possibility. For fugal infection, I suggest you to apply plane anti-fungal cream such as clotrimazole or ketoconazole. Take fluconazole 150 mg alternate days or tablet terbinafine 250 mg daily for 15 days. Do not apply any mixed cream or mixed ointments as it causes further aggravation of the problem. Do not pinch, pop or scratch the area. Keep the area dry and wear cotton clothes. Change the clothes two time a day. Do not get exposed to extremes of environment and protect yourself from heat and humidity. Take care.