Etymology: L, crena, notch. the formation of notches or leaflike scalloped edges on an object. Red blood cells exposed to a hypertonic saline solution acquire a notched, shriveled surface as a result of the osmotic effect of the solution. They are then called crenated red blood cells. crenate, crenated, adj.
Occipital neuralgia is the neck/head pain that results from injury or irritation to the occipital nerves. It can be caused by trauma, such as a car accident, by a pinched nerve root in the neck (from arthritis, for example) or by âtightâ muscles at the back of the head that entrap the nerves.
In this article. Occipital neuralgia is a neurological condition in which the occipital nerves -- the nerves that run from the top of the spinal cord at the base of the neck up through the scalp -- are inflamed or injured.ccipital neuralgia can be confused with a migraine, or other types of headache, because the symptoms can be similar. But occipital neuralgia is a distinct disorder that requires an accurate diagnosis to be treated properly.