 [ Symptoms ] what can cause hot flashes in a 19 year old female  i have been having hot flashes since i was 13 no one has been able to tell me why what are some things that can cause these hot flashes [ Disease ] i guess i am going to assume you have been evaluated several times by health care professionals just because no one has given you a diagnosis yet does not mean you should stop searching for one i can think of a number of conditions that could cause hot flashes in a young woman obviously estrogen levels could play a role but so could thyroid levels if your hormones all check out ok then you may simply need to wait and see if any other symptoms develop are you an introvert by any chance introverted people tend to have a narrower range of temperatures at which they feel comfortable introverts may feel hot when temperatures are not particularly warm or they may feel cold when the temperature is not frigid note that introverted does not mean shy  introversion > extroversion is an energy continuum extroverts charge their mental and emotional batteries by socializing introverts recharge by engaging in quiet alone time if the latter description fits you then your hot flashes may simply be related to your temperament interesting no still do not fail to continue following up on your symptoms in some cases it can take years to reach a diagnosis if you do have hormone problems for example perhaps they have not fully revealed themselves yet you should continue to pursue answers you deserve them