Matching Pairs Nail DisordersOnline version Match the nail disorder to the correct nail disorder description. by Rosalind Carter 1 onychauxis 2 melanonychia 3 hang nail 4 bruised nail beds 5 splinter hemorrhage 6 ridges Treated by trimming or bringing the nails down to size. Caused by physical trauma or injury to the nail bed that damages capillaries and allows small amounts of blood flow. 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. Perfectly normal in older clients. Darkening of the fingernails or toenails.