PT - JOURNAL ARTICLE AU - Kazuhide Takata AU - Fumihito Hirai TI - Minocycline-induced black hairy tongue and skin hyperpigmentation AID - 10.1136/bcr-2022-253811 DP - 2023 Apr 01 TA - BMJ Case Reports PG - e253811 VI - 16 IP - 4 4099 - http://casereports.bmj.com/content/16/4/e253811.short 4100 - http://casereports.bmj.com/content/16/4/e253811.full SO - BMJ Case Reports2023 Apr 01; 16