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