severe sensitivity to sun and heat

I HAD 2  SEVERE HEAT STROKES ALMOST 2 YEARS AGO. SINCE THEN I CANNOT GO OUTSIDE WHEN TEMPS ARE ABOVE 78 DEGREES WITH NO DIRECT SUNLIGHT BECAUSE I GET A FEVER WHICH RELIEVES ITSELF AFTER ABOUT AN HOUR. IF I  DON'T CATCH MY FEVER IN TIME I HAVE EITHER HEAT EXHAUSTION OR HEAT STROKE. DEPENDING ON HOW HIGH MY TEMP WENT I WILL EXPERIENCE FORGETFULNESS, WORDS COMING OUT BACKWARDS ,AND ONE MINUTE I'M TREMBLING FROM CHILLS AND THE NEXT I AM BURNING UP AGAIN. SOMETIMES THIS CAN LAST UP TO 2 WEEKS UNTIL MY BODY REGULATES ITSELF AGAIN. MY MD REFERRED ME TO A ENDOCRINOLOGIST AND 2 NEUROLOGIST. THEY AT THAT TIME THOUGHT I HAD HYPOTHLAMIC DISREGULATION, NOW THEY ARE NOT SURE AND WANT TO CHECK MY AUTONOMIC NERVOUS SYSTEM  IT HAS BEEN 2 YEARS SINCE MY HEATSROKES AND STILL HAVE NO ANSWERS OR CURE. I HAVE 3 SMALL KIDS AND LIVE IN TEXAS. THIS HAS GREATLY AFFECTED OUR LIVES SINCE I CANNOT TAKE THEM OUTSIDE AND CANNOT WORK. DOES ANYONE HAVE ANY ADVISE?