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