a condition characterized by episodic narrowing of the blood vessels in the fingers and toes, resulting in reduced blood flow and color changes in the affected areas
a condition characterized by inflammation and cracks at the corners of the mouth, often caused by a combination of factors including infection, dryness, and nutritional deficiencies
an itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs