Acts chiefly upon the sensorium, increasing its activity, perverting its function, and giving rise to nausea, delirium, and to hallucinations ; simulating in kind the action of Belladonna and Hyoscyamus , yet differing in degree. The delirium is more furious, the mania more acute, while the congestion, though greater than in Hyoscyamus , is much less than in Belladonna , never approaching a true inflammatory condition. Stramonium also produces great dryness of the throat and skin, on the latter causing a fiery red rash, resembling that of scarlatina. On other portions of the body Stramonium only acts through sympathetic irritation from the brain. In this manner it produces dilated pupils, diminished general sensibility, perversion of the special senses, convulsive motions, intense sexual excitement, suppressed urine, etc. Characteristic, symptoms.