What Causes Frequent Kidney Infections?

My name is Mikki. I have a long line of family history of malignant hyperthermia. i am 27. Last summer i got real sick. and it's happening again this summer. i went from190 to 165 in a month an a half. in the heat my body over heats. i stay dizzy. i have fainted. by body tingels. sometimes my muscles ache. sometimes hurt. i am constantly throwing up. ny heart sometimes goes haywire. I can't concintrate. i don't remember things told to me, i have mood swings. I'm off balance. i have a lot of kidney infections. -If i stay real cool. im ok. other than getting sick. my skin is pail. 15 minutes in the heat and i am confused- burnig up, my clothers are soaked. my skin to the touch is cool though. my heart is racing. my face twitched. sometimes other parts of my body. and a whole bunch of other things. Could i be doing something different causing the mh to act up?