A Hogwarts headache is a mild condition caused by unhealthily long reading sessions of the addictive Harry Potter series of books, in particular the two most recent volumes that are monumental in size. The basic symptom is a tension headache, which may be accompanied by neck or wrist pains. All resolve themselves within a few days after the book is finished.
The term was coined by Dr. Howard J. Bennett in a letter to the New England Journal of Medicine shortly after the release of the Order of the Phoenix, which has over 800 pages. He stated that his prescription of taking breaks was rejected by two of the patients. No experiments were conducted to see if the ailment could be cured by the use of chocolate.
