Upper Left Abdominal Pain More Condition_symptoms What Can Cause Upper Left Abdominal Pain?

What can cause upper left abdominal pain? - upper left abdominal pain more condition_symptoms

He had left upper abdominal pain the last few months, night sweats. Is I was diagnosed with celiac disease, there are almost 3 years. I also have hypothyroidism. I carefully followed my GF diet, no idea what might be, would be very grateful. Thank you!