Well, as a sufferer myself for a lot of years, that definately sounds like OCD (ie; repeated checking, concerns over health, etc). Does your husband have a primary care physician he can get a referral from to see a therapist?. They usually give SSRI's like Zoloft or Lexapro for this and there is also cognitive-behavioral therapy which might help him as well. I wish you luck and I'm here for you if you need a friend:-)