MY SON WAS ON DOXYCYCLONE FOR ALMOST TWO WEEKS FOR TREATMENT OF L...

MY SON WAS ON DOXYCYCLONE FOR ALMOST TWO WEEKS FOR TREATMENT OF LYMES DISEASE WITH NO SIDE EFFECTS AT ALL. THEN WE WENT ON VACATION TO THE BEACH AND EVEN THOUGH HE HAD SUN BLOCK, HE STILL GOT BURNED MOSTLY JUST ON HIS FACE. THE NEXT TWO DAYS HIS FINGERS WERE SLIGHTLY TINGLY AND HIS HANDS FELT LIKE THEY WERE ON FIRE. I ASKED HIM WHAT WAS DIFFERENT AND HE TOLD ME SINCE WE HAD BEEN ON VACATION, HIS ALLERGIES HAD BEEN ACTING UP SO HE HAD BEEN TAKING HIS ALLEGRA. I TOLD HIM TO STOP THE ALLEGRA AND IN 24 HOURS, THE BURNING SENSATION WAS GONE. I HAVE BEEN READING THAT OTHER PEOPLE HAVE HAD THE HEAT AND BURNING SENSATION IN THEIR EXTREMETIES. HAVE ANY OF YOU ALSO BEEN ON ALLEGRA OR OTHER ANTI-HISTAMINES? COULD THIS BE A POSSIBLE DRUG INTERACTION? MY SON IS ALMOST DONE WITH HIS 4 WEEK TREATMENT FOR LYMES DISEASE AND HAS NO OTHER PROBLEMS.