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.
If you have a cold, youâll probably experience symptoms such as: 1  runny or stuffy nose. 2  sore throat. 3  sneezing. 4  mild-to-moderate fever. 5  cough. 6  headache or body aches. 7  mild tiredness.
Unlike symptoms of a common cold, flu symptoms usually come on suddenly. Flu usually starts with the abrupt onset of fever, headache, fatigue and body aches. Here's a list of flu symptoms you might feel: 1  High temperature.  Severe aches and pains in the joints and muscles and around the eyes.