The "symptoms" resolve themselves within days of finishing the book.
His prescription of taking reading breaks was rejected by two of the patients on which he discovered this headache.
In the story, the protagonist Andrea Sachs is ordered to retrieve two copies of the next installment in the series for her boss's twins before they are published so that they can be privately flown to France, where the twins and their mother are on holiday.
The series has come with its share of criticism as well.
Allegations of witchcraft and the Occult found in the text, and legal disputes, one doctor coined the term "Hogwarts headache" in a letter to the New England Journal of Medicine shortly after the release of Order of the Phoenix, the longest book in the series, at 766 pages in the UK edition, 870 pages in the US edition, and over 250,000 words.
He described it as a mild condition, a tension headache possibly accompanied by neck or wrist pains, caused by unhealthily long reading sessions of Harry Potter.
A Bridal Guide featured two real weddings soon before the release of the final movie, which quickly spread through the fandom via Facebook, Twitter, and Tumblr.
The first site to receive the award was Immeritus, a fan site mostly devoted to Sirius Black, and about which Rowling wrote, "I am so proud of the fact that a character, whom I always liked very much, though he never appeared as much more than a brooding presence in the books, has gained a passionate fan-club." although in 2010 the website came back online again albeit with a lot of content missing.
The next site was the Harry Potter Lexicon, an online encyclopedia Rowling has admitted to visiting while writing away from home rather than buying a copy of her books in a store.
"Harry Potter fandom" refers to the community of fans of the Harry Potter books and movies who participate in entertainment activities that revolve around the series, such as reading and writing fan fiction, creating and soliciting fan art, engaging in role-playing games, socializing on Harry Potter-based forums, and more.
The fandom interacts online as well as offline through activities such as fan conventions, tours of iconic landmarks relevant to the books and production of the films, and parties held for the midnight release of each book and film.
By the fourth Harry Potter book, the legions of fans had grown so large that considerable security measures were taken to ensure that no book was purchased before the official release date.
The craze over the series was referenced in Lauren Weisberger's 2003 novel The Devil Wears Prada as well as its 2006 film adaptation.