Your Toenails Know More Than You Do: The Hidden Health Clues Below the Surface

Beyond infections, changes in the nail can be a manifestation of autoimmune disorders. Nail psoriasis, for instance, affects a significant percentage of people with the skin condition. Key signs include tiny pits or depressions on the nail surface, a yellowish-red discoloration that looks like an "oil drop" beneath the nail plate, and the separation of the nail from the bed, a condition called onycholysis.