Another effect of sleep deprivation that I have felt is that when sleep deprived, the body's tollerance for alcohol, (and probably other drugs), is much lowered, so a small amount of alcohol will have more effect on you when you're very tired.
Mastoiditis can cause pain behind the ear and down the neck. MedlinePlus states that mastoiditis is an infection of the mastoid bone of the skull, which is located directly behind the pinna or the outside portion of the ear.hoto Credit Jupiterimages/Photos.com/Getty Images. Numerous conditions can cause pain behind the ear and down the neck. According to MedlinePlus, a publication of the National Institutes of Health, neck pain can travel to other parts of the body, such as the shoulder, arm and head.
Normally, we assume that earache occurs because of ear infection, which is in fact true for most cases. Especially in children or infants, infection or cold is the most likely cause of ear pain. Ear pain in children can occur when the ear canal is irritated from swabs or other foreign material inside the ear. Sometimes, soap or shampoo that stays in the ear can cause the earache.