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Benign paroxysmal vertigo of childhood is a neurological disorder that causes vertigo, a type of dizziness, in children. It is one of the most common causes of vertigo in children and is considered a subtype of migraine. BPVC is characterized by repeated, sudden episodes of vertigo that stop without intervention, typically lasting a few minutes.
Often, a specific cause is not identified. [3] When found, the underlying mechanism typically involves a small calcified otolith moving around loose in the inner ear. [3] Diagnosis is typically made when the Dix–Hallpike test results in nystagmus (a specific movement pattern of the eyes) and other possible causes have been ruled out. [1]
Dizziness is a common medical complaint, affecting 20–30% of persons. [4] Dizziness is broken down into four main subtypes: vertigo (~25–50%), disequilibrium (less than ~15%), presyncope (less than ~15%), and nonspecific dizziness (~10%). [5] Vertigo is the sensation of spinning or having one's surroundings spin about them. Many people find ...
In electronics, motorboating is a type of low frequency parasitic oscillation (unwanted cyclic variation of the output voltage) that sometimes occurs in audio and radio equipment and often manifests itself as a sound similar to an idling motorboat engine, a "put-put-put", in audio output from speakers or earphones.
Other simple remedies include avoiding sudden changes in posture when sitting or lying and avoiding bright lights. Several essential electrolytes are excreted when the body perspires. When people experience unusual or extreme heat for a long time, sweating excessively can cause a lack of some electrolytes, which in turn can cause lightheadedness.
Vestibular migraine is the association of vertigo and migraines and is one of the most common causes of recurrent, spontaneous episodes of vertigo. [3] [10] The cause of vestibular migraines is currently unclear; [3] [40] however, one hypothesized cause is that the stimulation of the trigeminal nerve leads to nystagmus in individuals with ...
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Patients with CSD frequently initially suffer a sudden injury of some sort to their vestibular system, the neurologic network that preserves sense of balance. Even after this initial injury has healed, people with CSD usually describe a vague sense of unsteadiness worsened by triggers in their environment such as high places, standing on moving ...