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Lichen planus may be categorized as affecting mucosal or cutaneous surfaces.. Cutaneous forms are those affecting the skin, scalp, and nails. [10] [11] [12]Mucosal forms are those affecting the lining of the gastrointestinal tract (mouth, pharynx, esophagus, stomach, anus), larynx, and other mucosal surfaces including the genitals, peritoneum, ears, nose, bladder and conjunctiva of the eyes.
Graham-Little syndrome or Graham-Little–Piccardi–Lassueur syndrome is a cutaneous condition characterized by lichen planus-like skin lesions. [ 1 ] : 648 It is named after Ernest Graham-Little .
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.
In one study, the use of antiandrogens (finasteride or dutasteride) was associated with improvement in 47% and stabilization in 53% of patients [14] Recently, successful treatment of facial papules in patients with frontal fibrosing alopecia was described with oral isotretinoin.
Postinflammatory hypopigmentation is a highly prevalent pigmentary disease. It can happen to any type of skin. Nonetheless, individuals with darker skin seem to have it more frequently and visibly, perhaps due to the color contrast with their natural skin. The incidence of postinflammatory hypopigmentation is the same for both sexes. [2]
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 ...
Pigmented purpuric dermatosis refers to one of the three major classes of skin conditions characterized by purpuric skin eruptions. Pigmented purpuric dermatosis are distinguished from other purpura by size (0.3–1 cm) and are most often seen in the lower extremities.
There is no standard treatment for pityriasis lichenoides chronica. Treatments may include ultraviolet phototherapy, sun exposure, oral antibiotics, and corticosteroid creams and ointments to treat rash and itching. [3] [5] One study identified the enzyme bromelain as an effective therapeutic option for pityriasis lichenoides chronica. [6]