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.
Heart failure causes reduced blood flow to the rest of your body. If the flow to your brain is lower than usual or your blood pressure is low, you may feel dizzy. Dizziness in people with heart failure is often caused by their medicines. However, irregular heartbeats, which often happen with heart failure, or a temporary drop in blood pressure, caused by rising from a sitting or lying position (postural hypotension), can also cause dizziness. You should discuss any dizziness with your doctor or nurse to identify its cause. Return to Symptoms.