blacking out

hello lately i have been blacking out,getting dizzy and having headaches , i want to know whats going on.

[Dr J Singh]

Hello,
For syncope/fainting to occur, either the reticular activating system in the brain needs to lose its blood supply, or both hemispheres of the brain need to be deprived of blood, oxygen, or glucose.

So it can be due to fall in BP, hypoglycemia, dehydration and inadequate electrolytes in the body, postural hypotension(orthostatic hypotension),, blockage of arteries supplying blood to the brain esp. the carotids, anemia, vasovagal attacks or underlying neurological conditions(like MS and motor neuron disease)

Sometimes, there are partial or complete blockages in the arteries that supply the brain with blood.  These blockages can cause a temporary loss of blood flow (called transient ischemic attack, or TIA for short), or permanent loss of blood flow (called stroke; also called cerebrovascular accident). This can lead to impaired blood flow through these arteries and so dizziness. In such cases CT brain can be useful. I feel that you seem to be having TIA. Please consult a neurologist for complete neurological examination.

It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing