Nail Separation: Symptoms, Signs, Causes & Treatment- fingernails falling off diabetes ,10/9/2019· Separation of the nail from the nail bed, medically known as onycholysis, is a common condition that results in a white appearance of the affected part of the nail.Fingernail or toenail separation can have numerous causes but is typically related to trauma or a fungal infection of the nails. ...What Would Cause Fingernails to Fall Off? - Reference12/4/2020· Symptoms of a fungal infection of fingernails include nails that appear yellow, cracked, streaked, thickened or spotted, states WebMD. Psoriasis is a skin condition that may cause a fingernail to fall off, and acetone nail polish may cause the same condition. One possible side effect of chemotherapy is detached fingernails.