On occasion one or both of what seems to be the ends of my bone hard nuchal ridges (back of skull behind both ears and slightly above and on each side of my occipital protuberance) will become softer and swollen, also they become enlarged when I have hysterical laughter. Why do they swell/enlarge? Sometimes there is pain when swollen, but not from laughter. Is this normal? Are these the ends of my nuchal ridges or something else?
Hi there. It is possible your fontanelles haven't closed properly which is why you may be experiencing swelling increasing with laughing. I suggest you get an ultrasound study of the swelling after consulting your Neurosurgeon.