It's definitely not a walk in the park, and certainly no picnic. Chemotherapy is capable of causing side effects that can really derail you for a while.

Peptic ulcers are open sores in either the stomach (called a gastric ulcer) or in the initial part of the small intestine (a duodenal ulcer). But, contrary to what many have believed, excessive stress and worry do not give people peptic ulcers.