This is often seen in the elderly, in which the toenails (or fingernails) are thickened and curved like “ram’s-horn”.
Symptoms typically include thicken yellowish or brownish nails (seen more often in toenails). In some of cases, nail grows so thick that it resembles a shorn. Affected nails have a rough appearance with grooves and raised ridges.
It can be corrected, at an early stage, by a proper nail trimming. Please go to see a doctor if it get worse.