Hot flashes and nausea are most commonly caused by hormonal imbalances in the body, most notably, by sex hormones. For women, a decrease in estrogen is often to blame, whereas in men, testosterone deficiency can create the problem. Sometimes, the symptoms occur for reasons not related to those hormones at all.
Flu symptoms can be similar to those of a cold, although they tend to be more severe. Symptoms can include: 1  dry, hacking cough. 2  moderate-to-high fever (although not everyone with the flu will run a fever). 3  sore throat. 4  shaking chills. 5  severe muscle or body aches. 6  headache. 7  stuffy and runny nose.
Causes of Flu-like symptoms (Flu-like illness): See detailed list of causes below. Flu-like symptoms (medical symptom): Symptoms similar to flu including fever Introduction: Flu-like illness . Flu-like symptoms (medical symptom): Flu-like symptoms appear like the flu (see symptoms of flu), which tends to be more severe than the similar cold-like symptoms. Flu-like symptoms may include fever, shivering, chills, malaise, dry cough, loss of appetite, and body aches.