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The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
Frequency. 1 in 5,000 [1] Ehlers–Danlos syndromes (EDS) are a group of 13 genetic connective-tissue disorders. [7] Symptoms often include loose joints, joint pain, stretchy velvety skin, and abnormal scar formation. [1] These may be noticed at birth or in early childhood. [3]
6,400 (with chickenpox) [5] Shingles, also known as herpes zoster, is a viral disease characterized by a painful skin rash with blisters in a localized area. [2][6] Typically the rash occurs in a single, wide mark either on the left or right side of the body or face. [1] Two to four days before the rash occurs there may be tingling or local ...
Psoriasis is a long-lasting, noncontagious autoimmune disease characterized by patches of abnormal skin. [4] [5] These areas are red, pink, or purple, dry, itchy, and scaly.[8] [3] Psoriasis varies in severity from small localized patches to complete body coverage. [3]
1) General OCD symptoms (obsessions, compulsions, skin picking, hair pulling, etc.) that developed soon after exposure to the substance or medication which can produce such symptoms. 2) The onset of symptoms cannot be explained by an obsessive-compulsive and related disorder that is not substance/medication-induced and should last for a ...
Temporomandibular joint dysfunction (TMD, TMJD) is an umbrella term covering pain and dysfunction of the muscles of mastication (the muscles that move the jaw) and the temporomandibular joints (the joints which connect the mandible to the skull). The most important feature is pain, followed by restricted mandibular movement, [2] and noises from ...
Arms and hands of a 50-year-old man, showing large tophi of sodium urate affecting the elbow, knuckles, and finger joints. The crystallization of uric acid, often related to relatively high levels in the blood, is the underlying cause of gout. This can occur because of diet, genetic predisposition, or underexcretion of urate, the salts of uric ...
These sayings are: "great job," "practice makes perfect," "you're okay," "hurry up," "I'm on a diet," "we can't afford that," "don't talk to strangers," "be careful," no dessert unless you finish ...