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Furthermore, the inflammatory phase can not be noticeable, leaving hypopigmentation as the only characteristic. [2] Pityriasis lichenoides chronica frequently manifests as diffuse hypopigmentation with a small number of scaly papular lesions in patients with dark skin. [5] Changes in pigmentation frequently occur following thermal burns and ...
Postinflammatory hyperpigmentation (PIH) is a skin condition characterized by the darkening of the skin (hyperpigmentation) following an inflammatory injury, such as acne, dermatitis, infectious disease, or trauma. Less frequently, it may occur as a complication of a medical procedure performed on the skin. It is a common cause of skin ...
Unusual conditions that can be associated with a lichenoid inflammatory cell infiltrate are HIV dermatitis, syphilis, mycosis fungoides, urticaria pigmentosa, and post-inflammatory hyperpigmentation. [2] In cases of post-inflammatory hyperpigmentation, it is important to exclude potentially harmful mimics such as a regressed melanocytic lesion ...
Hyperpigmentation can be diffuse or focal, affecting such areas as the face and the back of the hands. Melanin is produced by melanocytes at the lower layer of the epidermis . Melanin is a class of pigment responsible for producing color in the body in places such as the eyes, skin, and hair.
Treat the underlying inflammatory disease to restore pigmentation Pityriasis versicolor: A topical ointment, such as selenium sulfide 2.5% or imidazoles. Can also use oral medications, such as oral imidazoles or triazoles. Vitiligo: Topical steroids, including calcineurin inhibitors.
It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (), photosensitization, [3] acute radiation syndrome, mercury toxicity, blister agents, [4] niacin administration, [5] or waxing and tweezing of the hairs—any of which can cause the affected capillaries to dilate, resulting in redness.
Because EDP is an uncommon disease of the skin, it is important to consider other skin diseases that may resemble erythema dyschromicum perstans, such as infectious diseases (i.e. leprosy or pinta), reaction to drugs, post inflammatory hyperpigmentation, or lichen planus pigmentosus. There is no cure for EDP.
Hemosiderin hyperpigmentation is pigmentation due to deposits of hemosiderin, and occurs in purpura, haemochromatosis, hemorrhagic diseases, and stasis dermatitis.