My son has been complaining for a week about strange headaches. He is nine and very active and healthy. He described it as "like my brain is being washed...blurry vision, voices echo, head hurting around the front" It has happened 2-4 times a day in various situations, when shopping, at school, at home, and seems worse in a noisy environment. I have taken him to our doctor who examined him and said he can find nothing wrong, but to keep an eye on it. he said he thinks it could be some sort of migraine, but it's only lasting a minute or so most times, and doesn't sound like any sort of migraine i've heard of. Quite honestly I'm getting rather concerned. Any ideas or suggestions?