This article proposes, through a literature review, an updated summary of the initial evaluation, treatment and follow-up of sudden sensorineural hearing loss (SSNHL) based on current guidelines. SSNHL occurs within 72h with at least 30dBHL loss over 3 consecutive frequencies. Diagnosis is medical in the emergency setting, the etiological workup aims at treating known causes, while different pathophysiological hypotheses exist for idiopathic SSNHL. Controversy exists regarding optimal management due to frequent spontaneous recovery. However, corticotherapy remains widely accepted. Prognosis depends on initial severity, age, associated vertigo and shape of the audiometric curve. Hearing rehabilitation in proposed for significant residual hearing loss.