Yup…pain in the tum tum! Especially after a meal.

Yes, abdominal wall spasms can be a symptom of PD
Elaboration below.
--- Jud

From --> https://pubmed.ncbi.nlm.nih.gov/22285116/

Painful abdominal contractions in patients with Parkinson disease
Abstract
We hypothesized that the unusual and painful abdominal contractions in two of our patients with Parkinson disease (PD) were linked to abdominal muscle hypertrophy. The abdominal pain was aggravated by sitting, standing, or walking, and was characterized by a powerful pulling sensation associated with palpable contractions of the rectus abdominis

From ---> https://pubmed.ncbi.nlm.nih.gov/21942133/
Abdominal pain: a symptom of levodopa end of dose wearing off in Parkinson's disease

Abstract
Long-term levodopa use is associated with the "End of Dose Wearing Off" (EODWO) phenomenon wherein Parkinsonian symptoms return before a patient's next scheduled dose of levodopa. Wearing off symptoms may include a variety of autonomic, emotional, motor, psychological and sensory abnormalities. Abdominal pain may be an important wearing off symptom as an early indicator of the development of EODWO in Parkinson's disease (PD) patients.

Thank you