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Psychiatry. Types. OCD. Dermatophagia (from Ancient Greek δέρμα — lit. skin and φαγεία lit. eating) or dermatodaxia (from δήξις, lit. biting) [ 3] is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers. This action can either be conscious or unconscious [ 4] and it is considered to be a type ...
Delusional parasitosis (DP) or delusional infestation[ 2] is a mental disorder in which individuals have a persistent delusion that they are infested with living or nonliving agents, such as parasites, insects, or bacteria, when no such infestation is present. [ 3] Individuals may present with dermatologic symptoms, such as excoriation or ...
Frostbite is a skin injury that occurs when someone is exposed to extremely low temperatures, causing the freezing of the skin or other tissues, [ 1] commonly affecting the fingers, toes, nose, ears, cheeks and chin areas. [ 6] Most often, frostbite occurs in the hands and feet. [ 7][ 8] The initial symptoms are typically a feeling of cold and ...
Trombiculidae ( / trɒmbɪˈkjuːlɪdiː / ), commonly referred to in North America as chiggers and in Britain as harvest mites, but also known as berry bugs, bush-mites, red bugs or scrub-itch mites, are a family of mites. [ 3] Chiggers are often confused with jiggers – a type of flea. Several species of Trombiculidae in their larva stage ...
Russell's sign, named after British psychiatrist Gerald Russell, is a sign [ 1] defined as calluses on the knuckles [ 2] or back of the hand due to repeated self-induced vomiting over long periods of time. The condition generally arises from the patient's knuckles making contact with the incisor teeth during the act of inducing the gag reflex ...
Common symptoms of a snake bite include: Severe pain, tenderness, and swelling. Bleeding and fang marks on the skin. Seizures. Numbness and tingling. Blurry vision. A taste of metal, mint, or ...
Specialty. Dermatology. Psychiatry. Excoriation disorder, more commonly known as dermatillomania, is a mental disorder on the obsessive–compulsive spectrum that is characterized by the repeated urge or impulse to pick at one's own skin, to the extent that either psychological or physical damage is caused. [ 4][ 5]
The pathophysiology of a spider bite is due to the effect of its venom. A spider envenomation occurs whenever a spider injects venom into the skin. Not all spider bites inject venom – a dry bite, and the amount of venom injected can vary based on the type of spider and the circumstances of the encounter. The mechanical injury from a spider ...