Blistering can arise from 3 documented medical conditions. Understanding the clinical context helps identify urgent causes early.
Atopic Dermatitis
Atopic dermatitis is a chronic inflammatory skin condition causing dry, itchy, and inflamed skin. It is most common in children but can occur at any age. It is part of the 'atopic triad' along with asthma and allergic rhinitis.
Contact Dermatitis
Contact dermatitis is skin inflammation caused by direct contact with an irritant (irritant contact dermatitis) or allergen (allergic contact dermatitis), causing redness, itching, and blistering. Common allergens include nickel, latex, and fragrances; avoidance and topical steroids are treatments.
Scabies
Scabies is a highly contagious parasitic skin infestation by the mite Sarcoptes scabiei, causing intense itching (especially at night) and a characteristic rash in the web spaces of fingers, wrists, and genitals. Permethrin cream is the first-line treatment.
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