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Shingles, also known as herpes zoster or zona, [6] is a viral disease characterized by a painful skin rash with blisters in a localized area. [2] [7] 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 pain in the area.
Years or decades later, shingles occurs when virions in a single ganglion reactivate, travel down nerve fibres and infect the skin around the nerve. The shingles rash is restricted to the area of skin supplied by a single spinal nerve, termed the dermatome. Exactly how VZV remains latent in the body, and subsequently reactivates, is unclear.
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The characteristic rash starts with a central circular or oval-shaped area, known as the "herald patch," Hu explains. "Then, within a week or two, people notice it spreading throughout the body."
Shingles If you’ve had chickenpox, the shingles virus (a.k.a. the varicella zoster virus) is already inside your body. If the virus becomes reactivated, it can cause painful, red rashes on your ...
The cause is unknown, but it may result from an initial viral infection or cancer, either of which could raise an autoimmune response. [12] Between 7 and 30% of dermatomyositis cases arise from cancer, probably as an autoimmune response. [13] The most commonly associated cancers are ovarian cancer, breast cancer, and lung cancer. [13]
Ringworm. What it looks like: Ringworm is a common skin infection caused by a fungus. It gets its name from its circular rash, which is often red, swollen, and cracked. Other symptoms to note ...
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]
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