Other treatment is directed at the underlying cause. For instance, people with appendicitis usually need surgery. Those with infections often need antibiotics. Those with low thyroid hormone levels need hormone replacement pills. Those with cancer may need surgery, chemotherapy , or radiation therapy .
Side effects depend on the treatments used.
For instance, medications used to treat nausea may cause drowsiness . Antibiotics may cause allergic reactions or stomach upset. Surgery carries a risk of infection and bleeding. This depends on the cause. For instance, pregnant women often get their appetite back after several weeks and need no further treatment.