Inflammation in the inner ear and vestibular migraines can cause vertigo or dizziness, according to Mayo Clinic. Other possible causes include a drop in blood pressure and insufficient blood output from the heart.
Another common cause of vertigo is a sudden change in head position, Mayo Clinic explains. This syndrome is known as benign paroxysmal positional vertigo. Meniere's disease, which involves fluid accumulation in the inner ear, can also lead to intense vertigo.
Anxiety disorders can contribute to sensations of dizziness, Mayo Clinic notes. Low iron levels, known as anemia, and low blood sugar, known as hypoglycemia, can do so as well. Finally, overheating and dehydration are common causes of dizziness.