REPORT OF A CASE
Following an attack of influenza in January, R. M., a single woman, 45 years old, with a history of previous good health, suffered from lassitude to an extreme degree. She was usually energetic and held a position that necessitated considerable mental and physical activity. Her history up to this time included the usual contagious diseases of childhood, pneumonia, bronchitis and influenza in the epidemic of 1918. The last attack of influenza had been a mild one, with only slight rise of temperature and moderate bronchial and gastro-intestinal symptoms. She remained away from work only two days, and then gradually resumed her usual routine though hampered by great fatigability. About two weeks after this partial recovery, the lassitude still persisting, she applied for treatment.Miss M. was a stout, well-nourished woman with excellent color and a general appearance of good health. There was no anemia, no sinus