<unk>  is an abnormality in color of the substance or surface of the nail plate or subungual tissues.<unk>  can be induced by antineoplastic drugs with few distinct forms, the most frequently seen is melanonychia. Although a few cytostatics may cause these changes, the drugs most commonly involved are adriamycin, cyclophosphamide and vincristine, or in polychemotherapy Also<unk>  is associated with AIDS. A significant association (p<0.05) was found between<unk>  and CD4 counts of below 200 per cubic millimeter.
Chromonychia
Paronychia
Platonychia
Leukonychia
Melanonychia
Anonychia
Trachonychia
Hapalonychia