Drug that may induce nail pigmentation - melanonychia:: (A) Retinoids, (B) Carbamazepine, (C) Tetracyclines, (D) Zidovudine
Answer is D. Anthracyclines, taxanes, fluorouracil, psoralens, and zidovudine may induce nail pigmentation through melanocyte stimulation in nail matrix resulting in melanonychia. It appears to be reversible and dose-dependent and appears 3-8 weeks after drug intake.