I am loosing so much hair i have bald spots, i do use a flat iron on my hair everyday can this be the cause and what can i do ?

See a dermatologist: Hair loss, especially defined areas of bald spots requires expert evaluation. Round patches of hair loss may be alopecia areata (where the body is attacking the hair follicles leading to hair loss). Other lab studies may be needed including: thyroid studies, rulling out anemia and lupus. Bottom line, you need a medical evaluation.