August 30 is Frankenstein Day. The unofficial holiday celebrates the life and times of English author Mary Shelley who wrote one of the wordâs most read monster novel, Frankenstein, or The Modern Prometheus. Born on August 30, 1797, Shelley published Frankenstein in 1818 anonymously at the young age of 22.
There are three main causes for primary headaches: 1  Migraine-Migraine headaches can be caused by reduced blood flow to various areas of the cerebral cortex. 2  Symptoms of migraines include sensitivity to light and noise, nausea, vomiting and intense throbbing pain that is usually on one side of the head.
Hypnic headaches, or alarm clock headaches, only occur during sleep. They typically awaken the sufferer at the same time each night, notes the Mayo Clinic. The pain is mild to moderate, and commonly lasts from 15 minutes to two hours or longer. The cause is not known. The headache occurring at the same time each night suggests a link to the circadian rhythms and sleeping/wake cycle, according to an article by E. Kerr and colleagues in the May 2006 Ulster Medical Journal.. Hypnic headaches commonly occur during REM, or dream, sleep.