Matching Pairs Nail Disorders & DiseasesOnline version Match the nail disorder with its' cause. by Rosalind Carter 1 Leukonychia spots 2 Hangnails 3 Koilonychia 4 Plicatured nail 5 Ridges 6 Beau’s lines 7 Melanonychia 8 Discolored nails 9 Bruised nail beds 10 Onychorrhexis 11 Onychophagy 12 Blue fingernails 13 Eggshell nails 14 Splinter hemorrhage A lack of circulating oxygen in the red blood cells. Small injury to the nail bed. Iron deficiency, anemia, or liver condition. May be just surface staining, a systemic disorder or poor blood circulation. Increased pigment cells usually within the matrix. 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. Minor injury to the nail matrix. Results of a habit of chewing nail or the hardened, damaged skin surrounding the nail. Physical trauma or injury to the nail bed. Dry skin and small cuts. Injury to the matrix, excessive use of cuticle removers, harsh chemicals, aggressive filing or heredity. Uneven growth of the nails, normal aging. Improper diet, hereditary factors, internal disease, or medication. Injury to the matrix, but it may be inherited.