My complete blood result is rbcs show hypochromia and microcytosis what that mean and is that cause dizziness, headache, and low pressure ?

Anemia?: These appearances of your red blood cells are consistent with iron deficiciency anema. However, these reports are less important than the numbers: RBC count, hematocrit, hemoglobin, and blood iron measurements. If you have faiirly severe anemia, it could cause dizziness and maybe headache, but probably not low blood pressure. Discuss with your doctor.