Hello,
Stabbing pain in the upper abdomen is commonly due to indigestion,
food allergy, side effects of certain medications taken,
constipation, gastritis, acid reflux, etc. To get relief he can take antacids and PPIs, one SOS when needed. He can take Spasmol (
spasmoproxyvon), one SOS for relief if required. He should take fiber rich food for better bowel movement and take plenty of water.
However, such symptom may be indicative of UTI,
acute pancreatitis, liver problems, enlarged spleen, etc. You are suggested to get him clinically examined in ER, get urinalysis (R/E and C/S), Stool examination, blood and imaging tests done if required to detect pathology causing discomfort. This is to stay on the safer side.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician