Pih, also known as post-inflammatory hyperpigmentation, is a medical term referring to the darkened or discolored patches of skin that develop following an inflammatory skin condition or injury. It is a common phenomenon that occurs due to an overproduction of melanin, the pigment responsible for skin color, as a response to inflammation or injury.
Pih typically appears as flat, darkened patches or spots on the skin that can range in color from pink, red, brown, or black. It commonly occurs after skin conditions such as acne, eczema, psoriasis, or allergic reactions, as well as after physical trauma like cuts, burns, or insect bites. Pih is more common in individuals with darker skin tones, as they have a higher concentration of melanin.
The discoloration in pih usually fades over time, but it can take weeks to months for the affected areas to return to their normal pigmentation. However, in some cases, pih may persist for longer periods, requiring specific treatments to lighten the skin.
Preventive measures for pih include avoiding picking at acne or skin injuries, protecting the skin from prolonged sun exposure with sunscreen, and treating underlying skin conditions promptly. Treatment options for pih include topical creams containing ingredients like hydroquinone or kojic acid, chemical peels, microdermabrasion, and laser therapy.
In summary, pih refers to the darkened patches of skin that appear following an inflammatory skin condition or injury, resulting from an excess production of melanin. Understanding the causes, prevention methods, and available treatments for pih can help individuals manage and reduce its appearance.
