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Fingernail-biting that develops into fingernail-eating is a form of pica. Other forms of pica include dermatophagia, and compulsion of eating one's own hair, which can form a hairball in the stomach. Left untreated, this can cause death due to excessive hair buildup. Self-cannibalism can be a form of self-harm and a symptom of a mental disorder.
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 ...
A nail disease or onychosis is a disease or deformity of the nail. Although the nail is a structure produced by the skin and is a skin appendage, nail diseases have a distinct classification as they have their own signs and symptoms which may relate to other medical conditions. Some nail conditions that show signs of infection or inflammation ...
Fingernails—Find out what's normal and what's not, plus tips for taking care of your nails.
A nail is a protective plate characteristically found at the tip of the digits ( fingers and toes) of all primates, corresponding to the claws in other tetrapod animals. Fingernails and toenails are made of a tough rigid protein called alpha-keratin, a polymer also found in the claws, hooves and horns of vertebrates.
The joint study from Duke University and Environmental Working Group says a chemical used in many nail polishes known as TPHP can leak through the skin and into the wearer's bloodstream. TPHP is ...
In human anatomy, the eponychium is the thickened layer of skin at the base of the fingernails and toenails. It can also be called the medial or proximal nail fold. The eponychium differs from the cuticle; the eponychium comprises live skin cells whilst the cuticle is dead
Trichophyton rubrum is a dermatophytic fungus in the phylum Ascomycota. It is an exclusively clonal, [2] anthropophilic saprotroph that colonizes the upper layers of dead skin, and is the most common cause of athlete's foot, fungal infection of nail, jock itch, and ringworm worldwide. [3] Trichophyton rubrum was first described by Malmsten [ sv ...
Keratin. Keratin ( / ˈkɛrətɪn / [1] [2]) is one of a family of structural fibrous proteins also known as scleroproteins. Alpha-keratin (α-keratin) is a type of keratin found in vertebrates. It is the key structural material making up scales, hair, nails, feathers, horns, claws, hooves, and the outer layer of skin among vertebrates.
Dermatophyte. Dermatophyte (from Greek δέρμα derma "skin" ( GEN δέρματος dermatos) and φυτόν phyton "plant") [1] is a common label for a group of fungus of Arthrodermataceae that commonly causes skin disease in animals and humans. [2] Traditionally, these anamorphic (asexual or imperfect fungi) mold genera are: Microsporum ...