What Is Ashy Dermatosis? Skin Discoloration, Causes & Treatment Options Ashy dermatosis is an acquired pigmentary disorder that causes gray, blue-gray, slate-gray, or ashy-brown flat patches on the skin. It is also called erythema dyschromicum perstans, or EDP. This

What Is Arteriovenous Malformation? Skin Vessel Changes, Risks & Treatment Options An arteriovenous malformation is an abnormal high-flow connection between arteries and veins that can create skin vessel changes, warmth, pulsation, swelling, pain, bleeding, or tissue damage. It should

What Is Aquagenic Urticaria? Water-Triggered Hives, Causes & Treatment Options Aquagenic urticaria is a rare chronic inducible urticaria where contact with water triggers visible hives or wheals on the skin. It is different from ordinary dry-skin itch after showering

What Is Anhidrosis? Sweating Loss, Causes & Treatment Options Anhidrosis is the inability to sweat normally, and hypohidrosis is reduced sweating that can make body cooling less effective during heat, fever, or physical activity. Lack of sweating should not

What Is Angular Cheilitis? Mouth Corner Cracks, Causes & Treatment Options Angular cheilitis is inflammation at one or both corners of the mouth that can cause painful cracks, soreness, crusting, bleeding, swelling, or soggy-looking skin. It is more specific

What Is Angioedema? Swelling Symptoms, Triggers & Treatment Options Angioedema is deeper swelling under the skin or mucous membranes that can affect the lips, eyelids, face, tongue, throat, hands, feet, genitals, or bowel. It should not be treated as