This is symptoms complex associated with carcinoid tumors and characterized by:
- Attacks of severe cyanotic flushing of the skin lasting from minutes to days.
- Diarrhea and watery stool.
- Attacks of bronchoconstriction.
- A sudden drop in blood pressure.
- There is edema.
- There is ascites.
- There are symptoms due to the secretion of serotonin, prostaglandins, and other biologically active substances.