""Cerebral Hyperaemia: The Result of Mental Strain or Emotional Disturbance"" is a medical book written by William Alexander Hammond in 1878. The book explores the concept of cerebral hyperaemia, which is an increase in blood flow to the brain. Hammond argues that this condition is often caused by mental strain or emotional disturbance, and can lead to a variety of symptoms including headaches, dizziness, and even hallucinations. The book provides...