I think i have this since i was young,very young actually. I can't tolerate heat and summer very well it gives me really bad insomnia and rolling around the bed, sweating like crazy, suffocation and palpitations.It makes me feel really obnoxious and annoyed. Plus if i manage to go to sleep earlier than 1 am, i woke up at 3 am drenching in sweat and with panic attack n i can't breathe , i start hyperventilate n i must turn on the light. Then i stay on mobile till the dawn then i finally go to sleep till 11. Terrible. Anyone else with this symptoms? But in the winter i sleep more nice and have more energy n better mood.