Spontaneous Recurrence of Marihuana Effect

Four individuals reported the recurrence, in a drug-free state, of unusual visual or somatic sensations previously experienced during marihuana reaction. None had used other hallucinogens. Two of the four were distressed by these recurrences. Such events should be distinguished from the recurrence of clinical psychopathology first experienced during marihuana reaction and from reports of nonspecific heightening of perception subsequent to marihuana use.