Given the symptoms you describe, working with a gastroenterologist is the best course of action for your gastric ulcer and abdominal pain. Your skin problem and eye itching might be caused by

Doctor i want to know wat my sickness is for many years I was diagnosed as gastric ulcer n than n i was taking pantoprazale i became so thin n than now i have gain weight n slowly my left abdominal pain alot n I have itchy skin all over my body from head to toe n I feel so difficult n even my eyes it blink n feel weaker I don't know why n my left chest pain alot n it bumps alot n goes till my back