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1 Dizzy spell after diarrhea and vomiting as it caused due to dehydration. 2  Stress and anxiety. 3  In high fever. 4  Old age. 5  Weakness after suffering from prolonged illness. 6  Exposure to extreme of cold or heat. 7  Low blood pressure and high blood pressure. 8  Low blood sugar. 9  After heavy menstruation. 10  Meniereâs disease.
Cause. The dizziness is caused by dislodged calcium crystals (salt crystals) in the fluid of the inner ear. The calcium crystals move through the fluid of the inner ear during certain head movements of motion or dizziness (vertigo). The following are the most common reasons for dislodgment of calcium crystals in the inner ear: 1. Head trauma or whiplash injury. 2. Aging of the inner ear. 3.