Dermatology is the branch of medicine that focuses on the diagnosis, treatment, and prevention of skin, hair, and nail conditions. Dermatologists specialize in a wide range of issues, including acne, eczema, psoriasis, skin cancer, and fungal infections. They also address cosmetic concerns like aging skin, scars, and hair loss. Using various diagnostic tools, such as skin biopsies and imaging, dermatologists offer treatments that may include topical medications, laser therapies, and surgical procedures. Dermatology plays a crucial role in maintaining skin health and addressing both medical and aesthetic concerns.