This condition determines a lesion in situ that clinically manifests itself with pain on pressure (usually on contact with footwear), an evident inflammation, hyperaemic skin and, in more complicated cases, the presence of blood and granulocytic exudate (pus) up to the formation of a granuloma. All this is due to the fact that the penetration of the foil inside the perionychium (region surrounding the nail) is registered by our body as a foreign body, consequently activating all the defense mechanisms of our body.

CAUSES
The conditions that determine the onset of onychocryptosis see in 50% of cases an incorrect cut of the nail plate, in 20% of cases an alteration of the nail matrix, in 15% a direct or continuous trauma with the shoe, in 15% biomechanical alterations of the big toe. In addition, conditions of hyperhidrosis (excessive sweating), skin dryness or onychophosis (hyperkeratotic thickening in the periungual edge), but especially neglect and carelessness of the problem, can predispose to rather important clinical pictures.