Adam Strauss’s solo show The Mushroom Cure at Theatre 80 St. Marks has been extended through Jan. 27. Written and performed by Strauss and directed by Jonathan Libman, the show was first seen at the New York International Fringe Festival and at the Cherry Lane Theater in 2016. Strauss’s solo show was inspired by a scientific study showing that hallucinogenic mushrooms may cure obsessive-compulsive disorder. He then embarked on a program of vigilante psychopharmacology, trying to treat his debilitating obsessive-compulsive disorder with psychedelics. Performances will be Wed.-Sat. at 7:30 p.m. Theatre 80 St. Marks is located at 80 St. Marks Place at the corner of First Avenue. For tickets at $35, call OvationTix at (212) 352-3101 or visit themushroomcure.com.