Dermatology - Postinflammatory Hyperpigmentation

Dermatology - Postinflammatory Hyperpigmentation
Postinflammatory hyperpigmentation is a condition that occurs in people with darker skin as a result of acne, psoriasis, lichen planus, atopic dermatitis, contact dermatitis, or any inflammatory skin disease or injury. The duration of postinflammatory hyperpigmentation might range from several weeks to many months. Drug eruptions can sometimes cause an increase in skin pigmentation, namely in the melanin, which can also be linked to conditions like lichen planus and cutaneous lupus erythematosus.

Macular plaques of hyperpigmentation are typically localized to the area where the previous inflammation occurred and often have blurred, feathery edges. Riehl melanosis, also known as melanodermatitis toxica, is a patterned and merged pigmentation of the face and neck that appears black to brown-violet in color. This condition can be caused by contact or photocontact sensitivity to certain chemicals, especially fragrances found in cosmetics.

The diagnosis is based on clinical evaluation and encompasses all types of melanocytic lesions, as well as endocrine and metabolic diseases, and melasma.

Topical application of hydroquinone expedites the process of reducing excessive pigmentation in the outer layer of the skin. Dermal hyperpigmentation can be long-lasting, and there is now no remedy available.