- Most common Parkinson’s disease-associated GI disorders.
| Symptoms | Prevalence | References |
|---|---|---|
| Dysphagia (difficulty or discomfort in swallowing) | 9%–77% | (12) |
| Gastroparesis (paralysis of the stomach) | ~45% | (21) |
| (22) | ||
| Bowl disorder (Constipation) | 61% in PD patients and 24.5% had constipation before the appetence of the motor symptoms | (23, 24) |
| Small intestinal bacterial overgrowth (SIBO) | 25%–55%. | (15) |