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.
The nail bed is the skin beneath the nail plate. Like all skin, it is made of two types of tissues: the deeper dermis, the living tissue which includes capillaries and glands, and the epidermis, the layer just beneath the nail plate, which moves toward the finger tip with the plate.