What condition is characterized by the separation of the nail from the nail bed?

• A. Psoriasis
• B. Onycholysis
• C. Onychophagia
• D. Onychomycosis

Answer: (B)

Onycholysis is the condition that involves the separation of the nail from the nail bed. This separation can occur for various reasons, including trauma, prolonged exposure to moisture, and certain medical conditions. In onycholysis, the free edge of the nail may lift, and the underlying nail bed can appear pink to white depending on the degree of separation.

Understanding this condition is crucial because it can be a symptom of underlying health issues, such as thyroid disease or psoriasis, and it may require specific management to prevent further complications, such as infections. The clarity of this condition lies in its direct manifestation—visible separation—which distinguishes it from other related conditions that do not exhibit this specific feature. For instance, psoriasis can cause nail changes but does not typically involve direct separation from the nail bed in the same way.