Sometimes i get dizzy due to asthma. it's been happening a lately since there's a lot of pollen this year. is this giving me brain damage from loss of oxygen?

You should get e pulse oximeter, if you haven’t one already. If your pulse ox stays equal to or higher than 88%, then you do not need supplemental oxygen and you are not at risk for brain damage due to low oxygen levels. If you are experiencing shortness of breath due to your asthma, with or without a drop in your pulse ox, you should see a lung doctor to evaluate your current treatment. Good luck

Unless your asthmatic attacks result in cessation of breathing or loss of consciousness, would not expect profound hypoxia, and certainly not permanent brain damage. But if this is out of control, see a pulmonary specialist and get this handled.

During asthmatic episodes you're more apt to build up carbon dioxide levels than have low oxygenation.. As has been recommended by Dr. F, you need to get your asthma under control by your physician, allergist or a pulmonologist.

Dizziness may be result of hyperventilation, i.e. blowing off too much CO2. Breath into a paper bag