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.
Onycholysis is a nail disorder frequently encountered by dermatologists. Onycholysis is characterized by a spontaneous separation of the nail plate starting at the distal free margin and progressing proximally.In onycholysis, the nail plate is separated from the underlying and/or lateral supporting structures.athophysiology. Nails with onycholysis usually are smooth, firm, and without inflammatory reaction. Onycholysis is not a disease of the nail matrix, but nail discoloration may appear underneath the nail as a result of secondary infection.