differences between left and right hemispheres. 1  for many functions, there are no substantial differences between the left and right hemispheres. 2  lateralization of function is statistical rather than absolute. 3  tendencies:
When the nail plate separates from the nail bed, it causes a white discoloration. This is called onycholysis. This can be due to infection, trauma, or products used on the nails. Other causes for onycholysis include psoriasis and thyroid disease. Pitting. Pitting refers to small depressions, or little pits in the nail.
Reviewed by. Dr. Sara Karamloo. The medical term used to describe a toenail that falls off is onychoptosis or onycholysis, which simply indicates a separation of the nail from the nail bed. This phenomenon is usually a result of a fungal infection or a traumatic injury.ere are some tips to help you keep your toenails from falling off. 1  Wear shoes made of breathable materials that offer stability, protection and balance. 2  Use caution when performing in sports. 3  Wear clean socks and shoes daily.