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Differentiating Anosmia from other Diseases

  • Hyposmia - Reduced perception of smell
  • Parosmia - Altered perception of smell
  • Phantosmia - Perception of nonexistent smell

Anosmia risk factors

  • Old age
  • Head injury
  • Common cold
  • Neurodegenerative diseases

Anosmia historical perspective

One of the earliest cases of anosmia was recorded in 1864 by the neurologist John Hughlings Jackson.

Anosmia natural history, complications and prognosis

Although the olfactory nerves possess regenerative ability, the prognosis depends on the extent of damage to the nerves and the person’s recovery ability.