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Chronic paronychia is an infection of the folds of tissue surrounding the nail of a finger or, less commonly, a toe, lasting more than six weeks. [4] It is a nail disease prevalent in individuals whose hands or feet are subject to moist local environments, and is often due to contact dermatitis .
Louise Round, a marine animal medic, explained that “seal finger” is caused by the necrotic bacteria on their teeth. She said: “It’s a really nasty blood infection, it’s horrible. It ...
Seal finger, also known as sealer's finger and spekkfinger (from the Norwegian for "blubber"), [2] is an infection that afflicts the fingers of seal hunters and other people who handle seals, as a result of bites or contact with exposed seal bones; [citation needed] it has also been contracted by exposure to untreated seal pelts.
Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin.
A herpetic whitlow is a herpes lesion , typically on a finger or thumb, caused by the herpes simplex virus (HSV). Occasionally infection occurs on the toes or on the nail cuticle. Herpes whitlow can be caused by infection by HSV-1 or HSV-2. [1]
Kanavel's sign is a clinical sign found in patients with infection of a flexor tendon sheath in the hand (pyogenic flexor tenosynovitis), a serious condition which can cause rapid loss of function of the affected finger. [1] The sign consists of four components: [2] the affected finger is held in slight flexion.
The seal between the nail and finger acts as a physical barrier to prevent infection, however hyper-hydration or destruction of the epidermis can impair the barrier, allowing the bacteria to colonise. [medical citation needed] The nail turns green due to the bacteria secreting pigments such as pyocyanin [3] [4] and pyoverdin. [9]
A whitlow or felon is an infection of the tip of the finger. [1] [2] [a] Herpetic whitlow and melanotic whitlow (subungual melanoma) are subtypes that are not synonymous with the term felon. A felon is an "extremely painful abscess on the palmar aspect of the fingertip". [6]