Dizziness when bending over usually arises because the person is changing the positioning of their head, News in Health states. This may indicate that they are suffering from Benign Paroxysmal Positioning Vertigo (BPPV). There are other conditions that cause dizziness in general, like infections, lightheadedness, Meniere's disease and anxiety, WebMD states.
BPPV is a harmless condition that occurs when people get older, or it can arise temporarily when someone injures their head. It usually occurs when a small particle travels from the part of the ear that senses movement, causing dizzying sensations or the feeling that the head is turning when it is not, according to News in Health.
Some people may experience dizziness for other harmless reasons, like lightheadedness, which occurs when someone stands up too fast or they breathe too quickly. Infections may also cause temporary vertigo, which should clear within six weeks. In some cases, underlying pathologies cause dizziness. Meniere's disease is a long-lasting cause, which can come and go, states News in Health. Dandy's syndrome is a temporary condition that arises when someone takes an antibiotic that is toxic, according to WebMD. People who suffer from anxiety and depression may also experience dizzying symptoms when they are suffering from an attack, as stated by WebMD. Individuals who repeatedly experience dizziness, whether bending over or not, should obtain a medical assessment.