Other abnormalities, such as discoloration, spots, and nail separation, may develop as a result of infections, injuries, or some medications.
In many cases, the skin condition known as psoriasis causes nail abnormalities.
Why is my fingernail deformed?
Abnormalities — such as spots, discoloration, and nail separation — can result from injuries to the fingers and hands, viral warts (periungual warts), infections (onychomycosis), and some medications, such as those used for chemotherapy. Certain medical conditions can also change the appearance of your fingernails.
Can fingernails show signs of illness?
Nails and Health: Read the Signs
A touch of white here, a rosy tinge there, or some rippling or bumps may be a sign of disease in the body. Problems in the liver, lungs, and heart can show up in your nails.
What causes nail spooning?
Spoon nails usually develop on fingernails, but they can also occur in your toenails. The most common cause of spoon nails is iron deficiency, or anemia. This makes your level of red blood cells lower than normal.