Husband woke up with the chills, very cold, aches, body fatigue, and fever. he also has diarrhea, very loose. he took some tylenol (acetaminophen) but did not help. ?

Possible influenza: Although it is impossible to diagnose someone over the computer, his symptoms are very suspicious for influenza. If he did not have a flu shot this year, i would suspect that even more. It is important to seek medical care early on, as there is a medication that can be given if one has influenza, but only if started within the first 24-48 hours of symptoms. It won't cure it, but decrease time ill.