Risperdal withdrawal symptoms include: Supersensitivity rebound psychosis. ... Catatonia, hallucination, illusion. ... Nausea, vomiting. ... Anxiety, agitation, restlessness. 14,16 Cholinergic symptoms — cramps, diarrhea, muscle weakness, paralysis, blurred vision, excessive salivation. ... Paresthesia. ... Fatigue. ... Headache. More items... Sep 18, 2022