n. an early symptom or symptoms of a mental or physical disorder. A prodrome frequently serves as a warning or premonitory sign that may, in some cases, enable preventive measures to be taken. Examples are the auras that often precede epileptic seizures or migraine headaches and the headache, fatigue, dizziness, and insidious impairment of ability that often precede a stroke. Also called prodromic phase. —prodromicadj.—prodromaladj.