Dermatological diagnosis is the process of identifying and diagnosing skin conditions. HIVES, also known as urticaria, is a skin condition characterized by raised, itchy red welts on the skin. CYST is a closed sac-like structure that can be filled with fluid, gas, or other material. ECZEMA is a skin condition characterized by red, itchy, and inflamed patches of skin. All three of these conditions can be diagnosed through dermatological diagnosis.