The most interesting intmooafirn that I learned in this module is all the new intmooafirn in this particular chapter. First off I didn't know that a common headache is considered to be in the category of disease of the nervous system. I don't know it just seems weird to be called a disease but other headaches that was in the category was a cluster headache and a migraine headache. Secondly, I never heard of Reye's syndrome it is a neurological illness that could develop in kids as a viral infection. Also, I heard of MS or multiple sclerosis but I didn't actually know what exactly was happening to the body when somebody is diagnosed with it. At the beginning of the disease people can start losing their balance because of muscle impairment. Then it starts to affect speech and vision. This disease makes me sad and I feel bad for anybody and their families who has this.