[Risking the skin for some joints].

Marijuana, cannabis, hemp designate some plants and their extracts enriched in cannabinoids including change 9-tetrahydrocannabinol (THC). This soft drug exerts psychoactive effects and is responsible for adverse events appearing on the skin, mucosae and eyes. Contact allergic urticaria possibly occurs as well as Raynaud's phenomenon and arteritis resembling Buerger's disease. Glossitis and atrophic stomatitis may be associated with paronditis and uvular angioedema.