Trauma to the nail can be caused by the following; poor nail removal technique, dropping an object on the toenail, sporting individuals, ill-fitting footwear, stumping of the toe against a hard surface.
This damage can be identified by history of trauma to the nail, black-brown discoloration to the nail, sudden suspended growth in the nail length, increase in thickness of the nail, poor growth of nail shape.
This can be treated by either removing any underlying debris, filing the nail and use of Argan oil or other topical ointments.