MSH: A characteristic symptom complex.,CSP: heading term for a set of symptoms, usually three or more, which have a complex etiology and characterize a particular pathological state.,NCI: A set of symptoms or conditions that occur together and suggest the presence of a certain disease or an increased chance of developing the disease.,NCI: A group of signs, symptoms, and clinicopathological characteristics that may or may not have a genetic basis and collectively define an abnormal condition.