Information provided by you is suggestive of your husbands abnormal mental function in form of subconsciousness, fearfulness, withdrawn behavior. These are highly suggestive of unusual thinking and perception. Immediately consult qualified psychiatrist
. While visiting psychiatrist please get prepared that you have information about when you noticed such behavior first time, after onset whether he expressed any unusual thought or experience, family history of mental illness, substance use, any significant physical problem, any significant event prior to onset etc.
Your husband require immediate consultation with a psychiatrist.
Hope he will recover son.