Hello, Dizziness with certain head movements may be due to Benign Paroxysmal Positional Vertigo (BPPV). This is a disease of the part of the ear that is responsible for balance and consists of small sand-like structures precipitating there and making the area more sensitive to movements. You will need a visit with your doctor to rule this diagnosis out or to confirm it and be treated accordingly. The doctor will need to also check your heart and lungs to rule out problems with these organs due to your fast and deep breathing episodes. If these come out normal, anxiety is very likely the cause. I hope this answers your query. I remain at your disposal for further medical assistance. Regards, Dr. Antoneta Zotaj General and Family Physician