Johnson was diagnosed with manic depression by psychiatrists in the Cobb County facility; he doubted the accuracy of the diagnosis. He was prescribed with lithium tablets that he stopped taking during the 1980–81 NBA season without the knowledge of the Hawks team. Johnson believed that he no longer needed the medication and that it contributed to his tiredness during games. The Hawks became aware of the resumption of Johnson's erratic behavior in July 1981 and persuaded him to submit to a local hospital. Johnson showed up at the Hawks' training camp in October directly from the hospital and became increasingly disruptive as he rebuked teammates, left the floor to play with a child in the stands, and jumped rope on the sidelines while oblivious to his surroundings during practice sessions. After being so alarmed by his actions, Atlanta Hawks President Michael Gearon and General Manager Stan Kasten contacted Johnson's psychiatrist, who signed a commitment order to have Johnson placed in Grady Memorial Hospital. Johnson was picked up by police before a planned practice session and taken to Grady. Johnson was taken off the Hawks' suspended list on November 21, 1981.