What are the symptoms of a hiatus hernia and what can be done for it?

Many. Typically, only large hiatal hernias cause symptoms such as difficulty swallowing, chest pain, feeling full quickly, and fatigue due to anemia from ulcers. Diagnosis can be made with an upper GI contrast study. Treatment is surgical repair, best done by a general or thoracic surgeon with experience in laparoscopic repair. Hope this helps.
Maybe none. A hiatal hernia may have no symptoms. Sometimes there can be heartburn or acid reflux, worse with lying down too soon after eating. Rarely can have swallowing difficuties with food sticking in the esophagus. Rarely associated with anemia from severe gastritis in the herniated stomach.