good morning doctor, my husband went to bed last night complaing of nausea and woke up 3 to 4 hours later with a fever and with a severe of the chills. he is 36 and is on an antacid for his acid reflux.  Also we are on vacation with his family, but nobody else is showing any of the same syptoms.  Please help
Many conditions can cause these symptoms. If he is not having any other specific symptoms such as sore throat, cough, pain, etc., there is no way to even guess what it could be. Specific symptoms might reduce the possible diagnostic possibilities, but the specific diagnosis may require testing. This could be one of Hun Chat Doctor.  If he is very sick and having a very high fever, then take him to emergency or urgent care where they can examine him and make a specific diagnosis. Then the correct treatment can be started. Hope this helps.