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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.
Lightheadedness is a common and typically unpleasant sensation of dizziness [1] or a feeling that one may faint. The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring. In addition to dizziness, the individual may feel as though their head is weightless.
Episodes of vasovagal syncope are typically recurrent and usually occur when the predisposed person is exposed to a specific trigger. Before losing consciousness, the individual frequently experiences early signs or symptoms such as lightheadedness, nausea, the feeling of being extremely hot or cold (accompanied by sweating), ringing in the ears, an uncomfortable feeling in the heart, fuzzy ...
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 vertigo very disturbing and often report associated nausea and vomiting. [6]
[1] [9] People with BPPV may experience brief periods of vertigo, usually under a minute, [9] which occur with change in the position. [35] This is the most common cause of vertigo. [10] It occurs in 0.6% of the population yearly with 10% having an attack during their lifetime. [10] It is believed to be due to a mechanical malfunction of the ...
Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." [ 1 ] It is a disorientation -, vertigo -, and nausea -inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves .
The cause is often not clear. It may be due to a virus, but it can also arise from bacterial infection, head injury, extreme stress, an allergy, or as a reaction to medication. 30% of affected people had a common cold prior to developing the disease. [1] Either bacterial or viral labyrinthitis can cause a permanent hearing loss in rare cases. [7]
[1] [12] Experts differ in their confidence in flunarizine's effectiveness. [6] [12] Some studies have found it to be very effective in reducing the duration, severity, and frequency of hemiplegic attacks. [12] It is generally considered the best treatment available, but this drug is thought by some to be of little benefit to AHC patients.