A 32-year-old man with a long history of grand mal seizures but otherwise good health had recurrent episodes of postictal pulmonary edema when he failed to take anticonvulsant medication regularly. This case illustrates most of the features observed in other reported cases of postictal pulmonary edema. Symptoms include dyspnea and cough with production of various quantities of mucoid fluid that may be copious and frankly hemorrhagic. Blood pressure is normal, and temperature may be normal also but is frequently elevated to 100 or 101 F. No cardiac irregularities are heard on auscultation, and the ECG is often normal, but a wide range of abnormalities may be seen. Considerable arterial hypoxemia may occur, and leukocytosis (11,000 to 14,000 cells per cubic millimeter) is common. Rales and rhonchi are audible, and chest films often show bilateral upper and middle lobe infiltrates. The patient is usually clinically improved within 24 hours and the pulmonary edema completely cleared in three to five days.