Onychophagy
Onychorrhexis
Hangnails
Ridges
Eggshell nails
Plicatured nail
Melanonychia
Splinter hemorrhage
Bruised nail beds
Blue fingernails
Leukonychia spots
Beau’s lines
Discolored nails
Koilonychia
Physical trauma or injury to the nail bed.
May be just surface staining, a systemic disorder or poor blood circulation.
Injury to the matrix, but it may be inherited.
Dry skin and small cuts.
Injury to the matrix, excessive use of cuticle removers, harsh chemicals, aggressive filing or heredity.
Small injury to the nail bed.
A lack of circulating oxygen in the red blood cells.
Results of a habit of chewing nail or the hardened, damaged skin surrounding the nail.
Uneven growth of the nails, normal aging.
Iron deficiency, anemia, or liver condition.
Minor injury to the nail matrix.
Improper diet, hereditary factors, internal disease, or medication.
Major injury or illness that has traumatized the body, such as pneumonia, adverse drug reaction, surgery, heart failure, massive injury, or long lasting high fever.
Increased pigment cells usually within the matrix.
