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loss of consciousness (LOC)

Classification: - syncope is transient loss of consciousness - consciousness is lost during seizure - coma is a prolonged loss of consciousness Differential diagnosis: - seizure (epilepsy) - syncope - cataplexy (no loss of consciousness) * information from observers can contribute in differentiating epilepsy from syncope or psychogenic seizure [2]

Related

consciousness

Specific

coma shallow water blackout syncope

General

disorder of arousal; lack of awareness; impaired consciousness

References

  1. Geriatric Review Syllabus, 8th edition (GRS8) Durso SC and Sullivan GN (eds) American Geriatrics Society, 2013
  2. Chen M et al. Value of witness observations in the differential diagnosis of transient loss of consciousness. Neurology 2019 Feb 26; 92:e895 PMID: 30804064 https://n.neurology.org/content/92/9/e895