Dizziness due to heart problem or inner ear. how do i differentiate?

Dizziness: Dizziness is a somewhat non-specific term. Inner ear problems that cause dizziness are often likely to felt as vertigo, meaning a sense of spinning or turning in space, or unsteadiness like trying to walk on the deck of a moving ship. Dizziness from a heart problem, such as low blood pressure, is more often like a feeling of faintness, of nearly passing out.