 [ Symptoms ] what causes chronic flu like symptoms i feel like i have the flu all of the time chronic aches and pains feel feverish but do not have a fever any ideas [ Disease ] unfortunately it seems like a majority of conditions chronic or not have flu like symptoms a wild shot in the dark might be fibromyalgia because that causes random muscle aches but there are a lot of things that could cause it from medical conditions down to nutrient deficiencies and lack of sleep