<unk>  is identified as 'room spinning around'. It is a type of dizziness. Presyncope, lightheadedness and disequilibrium are other types of dizziness and should be ruled out. The cause of<unk>  can be peripheral or central in origin. In peripheral<unk> , dysfunction is in the vestibular system 
which includes the vestibule (utricle and saccule), semicircular canals, and the vestibular nerve. Central etiologies of<unk>  usually originates from the brainstem or cerebellum. Most common causes of<unk>  to appear in primary-care are benign paroxysmal positional<unk> , acute vestibular neuronitis, and Ménière’s disease. Best approach to diagnose<unk>  etiology is to obtain a complete history paired with a focal examination including assessment of cranial nerves, nystagmus, sensorineural hearing loss (Rinne or Webers test), otoscopic exam of ear canal and tympanic membrane, HINTS (cover/uncover test), Dix-Hallpike maneuver and/or Hennebert’s sign. Acute/severe attacks of<unk>  may subside in a day or two after brainstem compensation. Supportive therapy includes bed rest, antihistamine, antiemetic (prochlorperazine, metoclopramide) to relief the symptom. These drugs should not be used for a long period of time as it may delay the compensatory mechanism in the brainstem and result in the prolongation of<unk>  symptom.Treating the underlying cause is the definitive treatment of<unk> .
Vertigo
Tinnitus
Oculomucocutaneous syndrome
Pellagra
Impetigo
Ichthyosis
Keratoconjunctivitis sicca
Allergic conjunctivitis