Cannabidiol is a member of the cannabinoids, consisting of a diverse class of compounds derived from Cannabis sativa. There are three types of cannabinoids based on origin: endocannabinoids (endogenous), phytocannabinoids (plant-derived), and synthetic cannabinoids (synthesized). The endocannabinoid system plays a key role in skin homeostasis, such as proliferation, differentiation, and inflammatory signaling. A 64-year-old woman with a history of multiple squamous cell carcinomas who presented with skin lesions on her bilateral dorsal hands is reported. Her skin biopsies showed lichen simplex chronicus on her left hand and squamous cell carcinoma on her right hand; both lesions resolved with topical application of 20% cannabidiol. Cutaneous adverse events associated with cannabinoid use and potential therapeutic uses of cannabinoids in inflammatory skin diseases and skin cancer are also summarized.
Keywords: adverse event; cannabinoids; cutaneous; dermatology; lichen simplex chronicus; marijuana; psychoactive drug; side effect; skin; squamous cell carcinoma.
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