Seven hundred and twenty cases of endoscopically proven peptic ulcer were seen at PMRC Research Centre, Jinnah Postgraduate Medical Centre, during the last 13 years (June 1976-June 1989). Duodenal to gastric ulcer ratio was 5:1. Duodenal ulcer was predominantly seen between 3rd and 5th decade of life, with a male to female ratio of 5. 7:1. Seventy five percent cases were skilled persons. Places of origin showed 50% to be migrants; mostly from India while the rest belonged to various provinces of Pakistan. Sixty percent patients were smokers/tobacco chewers and 3% were simultaneously taking alcohol. History of NSAID intake was present in 5% cases only. Majority (85%) of the patients presented with pain, 42% had upper G.I. bleeding, 11% perforation and 1% pyloric stenosis.