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Related to onychophagia: onychotillomania, Chronic onychophagia

onychophagia, onychophagy

the habit of biting the fingernails.
See also: Fingers and Toes
References in periodicals archive ?
Well, you might be one of the millions who suffer from onychophagia.
Nail biting, also known clinically as chronic Onychophagia, is a compulsive habit of biting ones fingernails or toenails.
A NAIL biting - medical name onychophagia - is a difficult habit to break.