In some cultures in the Northern Hemisphere, the astronomical March equinox (varying between 19 and 21 March) is taken to mark the first day of spring, and the Northern solstice (around 21 June) is taken as the first day of summer. In other traditions, the equinox is taken as mid-spring.
Circulation problems that cause dizziness. You may feel dizzy, faint or off balance if your heart isn't pumping enough blood to your brain. Causes include: 1  Drop in blood pressure.
1 Benign paroxysmal positional vertigo (BPPV). 2  This condition causes an intense and brief but false sense that you're spinning or moving. 3  These episodes are triggered by a rapid change in head movement, such as when you turn over in bed, sit up or experience a blow to the head. 4  BPPV is the most common cause of vertigo. Medications. 2  Dizziness can be a side effect of certain medications â such as anti-seizure drugs, antidepressants, sedatives and tranquilizers. 3  In particular, blood pressure lowering medications may cause faintness if they lower your blood pressure too much.