Brittle nail syndrome - Nail and Distal Digit
Clinical features of brittle nail syndrome are onychoschizia (horizontal splits within the nail plate), onychorrhexis (increased longitudinal ridging, or splitting), and onycholysis (detachment of the nail plate from its bed). While some patients present to the physician due to cosmesis, many complain of pain with a negative impact on daily activities.
It is usually idiopathic, but there are some dermatological and systemic diseases that can be associated with secondary brittle nail syndrome. Dermatologic conditions include Darier disease, pityriasis rubra pilaris, lichen planus, and alopecia areata. Systemic diseases include hypopituitarism, hypothyroidism and hyperthyroidism, diabetes mellitus, malnutrition, Raynaud disease, and polycythemia vera.
L60.3 – Nail dystrophy
69192004 – Trachyonychia
Differential Diagnosis & Pitfalls