What Is The Treatment For Severe Hair Loss?

GUD AM... CAN U PLS HELP ME TO DETERMINED WHAT IS MY COMPLICATION NOW.,

I NOTICED THIS PAST FEW DAYS THAT MY HAIR IS FALLING AND ITS NOT JUST AN ORDINARY., CAUSE IT TOOK MANY OF MY HAIR., AND I NOTICED ALSO EVERYWEEK I HAVE SOME BRUISE ON MY BODY., AND SOMETIMES MY HEAD IS SO MUCH ACHING.... IS THERE ANY SERIOUS PROBLEM WITH MY HEALTH?