Oneirophrenia
A hallucinatory (dream-like) state that is caused by such conditions as prolonged sleep deprivation, sensory isolation, and drug use.
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- Oneself, fear of
“autos” (self) and “phobos” (fear) = literally, self-fear, fear of oneself. “Autos” has given us many English words such as “automatic” and “automotive” (self-moving) and “autonomy” (self-governing). And “phobos” has bequeathed us a vast number of phobias such as “claustrophobia” (fear of closed places) and “acrophobia” (fear of heights).
- Onset
In medicine, the first appearance of the signs or symptoms of an illness as, for example, the onset of rheumatoid arthritis.
- Onycho- (prefix)
Pertaining to the nails. Examples of medical terms involving “onycho-” include onychodystrophy (abnormal growth and development of the nails), onychomycosis (fungal infection of the nails), onychogryposis (abnormally curved nails) and onychoosteodysplasia (malformation of bones and nails).
- Onychogryphosis
an overgrowth (hypertrophy) and curving of the nails. Onychogryphosis results in a claw-like appearance of the nails and has been referred to as “ram’s horn nails.” It most often occurs due to neglect and failure to properly trim and care for the nails, although some cases have been described as occurring in response to repetitive […]
- Onychogryposis
Abnormally thick curved fingernails or toenails. From the Greek onyx, nail + gryposis, curvature.