What are the patterns on your skin for?
Three major line patterns cover the human body: the dermatomes (Head zones), the relaxed skin tension lines (Langer’s lines), and the naevoid lines of Blaschko, indicating a neural, haematogenic, or embryogenic background in their pathogenesis [1,2].
What is the Koebner phenomenon?
The Koebner phenomenon (KP), first described in 1876 by Heinrich Koebner, is the appearance of new skin lesions on previously unaffected skin secondary to trauma.
What is a plaque skin lesion?
Plaque — a circumscribed, palpable lesion more than 1 cm in diameter; most plaques are elevated. Plaques may result from a coalescence of papules. Most plaques are elevated, but a plaque can also be a thickened area without being visibly raised above the skin surface. They may have well-defined or ill-defined borders.
What is lichen planus and what causes it?
Lichen planus occurs when your immune system attacks cells of the skin or mucous membranes. It’s not clear why this abnormal immune response happens. The condition isn’t contagious. Lichen planus can be triggered by: Hepatitis C infection.
How can I cure my lichen planus?
Lichen planus has no cure, but different treatments can help relieve your symptoms and speed healing. Possible treatments include: Antihistamine medicine to relieve itching. Steroids on your skin or in your mouth to fight inflammation (You may also take steroids in pill form for severe cases)
What are Wickham striae?
Introduction. The term Wickham striae (WS) was coined by Louis Frédéric Wickham in the year 1895 and corresponds to fine white or gray lines or dots seen on the top of the papular rash and oral mucosal lesions of Lichen planus (LP),[1] also called as Lichen Ruber Planus.
What do lesions on the skin look like?
Skin lesions are areas of skin that look different from the surrounding area. They are often bumps or patches, and many issues can cause them. The American Society for Dermatologic Surgery describe a skin lesion as an abnormal lump, bump, ulcer, sore, or colored area of the skin.
What are the 6 Ps of lichen planus?
This description is known as the characteristic “6 Ps” of lichen planus: planar (flat-topped), purple, polygonal, pruritic, papules, and plaques. This rash, after regressing, is likely to leave an area of hyperpigmentation that slowly fades.
What is Blaschko’s lines?
Blaschko lines are consistently V-shaped on the upper spine, S-shaped on the abdomen, inverted U-shaped from the breast area to the upper arm, and perpendicular down the front and back of the lower extremities. They never cross the anterior truncal midline but run along it.
What does psoriasis plaque look like?
Plaque Psoriasis Patches of skin are red, raised and have silvery-white flakes, called scales. They usually show up on your scalp, elbows, knees, and lower back. They may crack and bleed and they feel sore and itchy. The more you scratch, the thicker they can get.
What is pseudo Koebnerization?
[2–3] While immunologic factors have been implicated in true Koebnerization, pseudo-Koebnerization represents seeding of surrounding tissues by trauma-like scratching or shaving and recently, threading.