Common symptoms
Skin redness
Areas of discolored, inflamed skin that may be patchy or widespread
Bumps or blisters
Raised papules, pustules, or fluid-filled blisters on the skin surface
Itching
Intense urge to scratch the affected area, often worsening at night
Scaling
Flaking or peeling of the skin surface over the rash area
Warmth or pain
Localized heat or tenderness at the site of the rash
Rashes can result from allergic reactions, contact with irritants, viral or bacterial infections, heat, or autoimmune conditions. Identifying the pattern, location, and onset of the rash helps determine the cause and appropriate treatment.
Allergic or contact rashes often peak within 24 to 72 hours of exposure and begin to resolve once the trigger is removed. Infectious rashes may spread before improving. Topical or oral medications can speed resolution and relieve discomfort.
Most rashes resolve fully within one to two weeks with appropriate treatment. Some may leave temporary skin darkening (post-inflammatory hyperpigmentation), which fades with time.