Spontaneous separation of nail plate at its distal end – keratin accumulates under nails.
Occurs at various speeds, but usually slowly. Usually asymptomatic.
Most due to trauma and Candida albicans or Pseudomonas infection.
Could also be due to – excessively long nails (chronic lifting of nail off bed can occur during normal activity); psoriasis (often have pitting as well); dermatitis/eczema; arterial insufficiency; hypothyroidism; congenital nail syndromes; chemicals and nail care products.
Removal of all detached pieces of nail.