My father was diagonised with Carcinoid cancer and recently has had mood swings...being angry one minute, mad the next, or even sometimes not realizing his anger.  He takes octriotide(sp) injections along with another pill (the name escapes me right now) but it is relatively new.  Is there a certain diet he should be on to avoid these mood swings.  Please advise...
Thanks for your question on Chat Doctor. Cancer itself can be a reason for such psychological behavior. Depression in cancer patient is quite common. So consult psychiatrist for this behavior. Another possibility is carcinoid tumor which secrets histamine and VMA. This substance s can cause such symptoms.  Other possibility is spread of carcinoid in brain causing such symptoms.  So consult psychiatrist for this.