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.
While influenza and the common cold are both caused by respiratory viruses, flu symptoms are significantly more severe. Although both illnesses can produce runny or stuffy noses and coughs, flu symptoms often also include high fevers (over 102Âº F), body aches, sore throat, vomiting and diarrhea.