Onychogryphosis, also called “ram’s horn nail”, is a thickening and increase in curvature of the nail.
It is usually the result of injury to the matrix.
It may be partially hereditary and can also occur as a result of long-term neglect.
It is most commonly seen in the great toe but may be seen in other toes as well as the fingernails.
An affected nail has many grooves and ridges, is brownish in color, and grows more quickly on one side than on the other.
The thick curved nail is difficult to cut, and often remains untrimmed, exacerbating the problem.