Definition

Noun: A medical condition characterized by the painless separation or detachment of the fingernail or toenail from its underlying nail bed, typically starting at the free edge and progressing backward.

Usage

This term is used exclusively in medical and clinical contexts to describe a specific nail disorder. It is a technical, uncountable noun.

Examples: * The dermatologist diagnosed the patient's condition as onycholysis. * Onycholysis can be caused by trauma, fungal infection, or psoriasis. * The separation caused by onycholysis creates a space where debris can collect.

Advanced Usage

• The condition can be described by its cause or appearance, e.g., or .
• It is often discussed in differential diagnosis, where a doctor distinguishes it from other nail diseases.

Variants and Related Words

• Onycholytic (adjective): Pertaining to or characterized by onycholysis.
  • The patient presented with onycholytic changes to several fingernails.

Synonyms

• Nail detachment
• Nail separation

Antonyms

• Normal nail adhesion
• Healthy nail attachment

Notes

• Onycholysis is not a disease itself but a symptom or clinical sign of an underlying problem.
• It is distinct from other nail issues like pitting (small dents) or ridging.

Noun

1. separation of a nail from its normal attachment to the nail bed