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