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.
Flu vs. Cold. There are differences between the flu and a cold, say local medical experts and the Centers for Disease Control and Prevention. The biggest difference is that with the flu youâll usually have a fever (100.4 degrees or more) coupled with muscle pain and body aches, which can be severe. With a cold, youâll have more symptoms like sneezing, a cough and phlegm, said Dr. Amanda Porro, director of Nicklaus Childrenâs Hospitalâs pediatric care center.