Relier Pairs Nail DisordersVersion en ligne Match the nail disorder to the correct nail disorder description. par Rosalind Carter 1 ridges 2 melanonychia 3 splinter hemorrhage 4 bruised nail beds 5 onychauxis 6 hang nail Perfectly normal in older clients. Caused by physical trauma or injury to the nail bed that damages capillaries and allows small amounts of blood flow. Darkening of the fingernails or toenails. Treated by trimming or bringing the nails down to size. Condition in which the living skin around the nail plate splits and tears. Condition in which a blood clot forms under the nail plate, causing a dark purplish spot.