Traumatic nail abnormalities

The nail plate is frequently affected by traumatisms that can be post-traumatic, occupational or self-induced. Among the self-induced nail disorders a psychiatric counselling must be sometimes considered. These include the "median dystrophy", the "Heller's canaliform dystrophy", the "onychophagy" and the "onychotillomania". The post-traumatic onychodystrophies include traumas of the pterigium, subungual haematomas, "melanonychia striata", "ingrown nail", "pincer nail" and "onychogriphosis". Lastly, there are occupational onychodystrophies, including "onychoschizia" or "brittle nails", "koilonychia", "chronic paronichia" and "onycholysis".