Hello I have gone through your question and understand your concern. Abdominal pain post herpes zoster infection can be due to gastrointestinal involvement of infection. A very rare an unusual complication of herpes zoster seen mostly in individuals recovering from infection in old age and is very rare in children. Herpes virus mainly affect nerves, sometimes infection causes paralysis of abdominal muscle wall and may cause obstruction. This intestinal pseudo-obstruction leads to pain in abdomen, discomfort, abdominal distention and can be diagnosed by abdominal radiography and may require surgical intervention. Undergo ultra sound abdomen and pelvis along with abdominal X-ray for better prognosis and consult a doctor to get abdomen physically examined. Good luck. Hope your concern is answered. Thank you.