What Is Androgenetic Alopecia? Hair Thinning Pattern, Causes & Treatment Options Androgenetic alopecia is inherited pattern hair thinning that develops gradually as susceptible hair follicles shrink and produce finer, shorter hairs over time. It is different from sudden patchy

What Is Alopecia Areata? Hair Loss Pattern, Causes & Treatment Options Alopecia areata is an autoimmune hair-loss condition that often causes sudden smooth round or oval bald patches when immune activity disrupts hair follicles. It is different from ordinary

What Is Allergic Contact Dermatitis? Skin Rash, Triggers & Treatment Options Allergic contact dermatitis is a delayed allergic skin rash that develops when the immune system reacts to a specific substance touching the skin. It is not contagious, and

What Is Actinic Keratosis (Solar Keratosis)? Warning Signs, Causes & Treatment Options Actinic keratosis, also called solar keratosis, is a rough or scaly precancerous skin spot that develops on chronically sun-damaged skin. It should not be treated as a

What Is Actinic Cheilitis (solar cheilitis)? Lip Symptoms, Sun Damage & Treatment Options Actinic cheilitis, also called solar cheilitis, is chronic sun damage on the lips that can cause persistent dryness, scaling, roughness, white patches, crusting, or lip-border blurring.

What Is Acanthosis Nigricans? Skin Darkening, Causes & Treatment Options Acanthosis nigricans is a skin condition that causes darker, thicker, often velvety-looking skin, usually in folds such as the neck, armpits, or groin. This pattern involves skin darkening, skin