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Some people also bite on their skin on their finger knuckles which can lead to pain and bleeding just by moving their fingers. In herpetology, dermatophagia is used to correctly describe the act in which amphibians and reptiles eat the skin they shed, [5] but this is not what occurs in humans.
It is characterized by unintentional and purposeless motions and restlessness, often but not always accompanied by emotional distress. Typical manifestations include pacing around, wringing of the hands, uncontrolled tongue movement, pulling off clothing and putting it back on, and other similar actions. [1]
Some common examples of stimming (sometimes called stims) include hand flapping, clapping, rocking, blinking, pacing, head banging, repeating noises or words, snapping fingers, and spinning objects.
The problem doesn't stop at nails, either. Habitual nail-biters often chomp on the skin around their fingers, too, leaving open cuts and abrasions that could easily pick up even more bacteria...
Paresthesia is an abnormal sensation of the skin (tingling, pricking, chilling, burning, numbness) with no apparent physical cause. [1] Paresthesia may be transient or chronic, and may have many possible underlying causes. [1] Paresthesias are usually painless and can occur anywhere on the body, but most commonly occur in the arms and legs.
Paronychia is an inflammation of the skin around the nail, which can occur suddenly, when it is usually due to the bacterium Staphylococcus aureus, or gradually when it is commonly caused by the fungus Candida albicans. [2] [3] [4] The term is from Greek: παρωνυχία from para 'around', onyx 'nail', and the abstract noun suffix -ia.
The swimming reflex involves placing an infant face down in a pool of water. The infant will begin to paddle and kick in a swimming motion. The reflex disappears between 4–6 months. Despite the infant displaying a normal response by paddling and kicking, placing them in water can be a very risky procedure.
Frostbite is a skin injury that occurs when exposed to extremely low temperatures, causing the freezing of the skin or other tissues, commonly affecting the fingers, toes, nose, ears, cheeks and chin areas. Most often, frostbite occurs in the hands and feet. The initial symptoms are typically a feeling of cold and tingling or numbing.
The mandibles are a pair of hard, often tooth-like structures that move horizontally to grasp, crush, or cut food or enemies (see defence, below). Two pairs of finger-like appendages, the maxillary and labial palpi, are found around the mouth in most beetles, serving to move food into the mouth.
A vampire is a mythical creature that subsists by feeding on the vital essence (generally in the form of blood) of the living. In European folklore, vampires are undead humanoid creatures that often visited loved ones and caused mischief or deaths in the neighbourhoods which they inhabited while they were alive.