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.
Spoon nails are a condition where the nail bed is flat or concave and dips or waves are visible on the surface of the nail. The dips and waves are actually in the nail bed â but since the natural nail is attached to the bed, the abnormality affects the nails.