Everyone Healthy Library
Loss of Consciousness (Unconsciousness)
Sign or symptom reference page from the Everyone Healthy database.
! Seek urgent medical care if warning signs appear
A symptom can have many possible causes. Some symptoms need urgent assessment, especially when they are severe, sudden or rapidly worsening.
Get urgent medical care now if there is any severe, sudden, rapidly worsening or worrying symptom, especially:
- chest pain, pressure or pain spreading to the arm, jaw or back
- trouble breathing, blue lips, severe wheeze or choking
- stroke-like symptoms such as face drooping, arm weakness or speech trouble
- collapse, fainting, seizure, confusion or extreme drowsiness
- severe bleeding, black stools, vomiting blood or major injury
- severe allergic reaction, swelling of the face/throat or widespread rash with breathing trouble
- severe abdominal pain, severe headache, stiff neck or sudden vision change
- signs of severe dehydration, sepsis, high fever with worsening illness, or symptoms in a baby/young child that concern you
Full information
Loss of Consciousness (Unconsciousness)
Unconsciousness occurs when a person is unable to respond to stimuli, such as loud noises or gentle shaking. Unconsciousness or any other sudden change in mental status should be treated as a medical emergency.
Symptom classification
Body areaEntire Body
Conditions linked to this sign/symptom
34- Acute Tubular Necrosis
- Alcohol Intoxication
- Anencephaly
- Arterial Gas Embolism
- Asthma
- Atlantoaxial Subluxation
- Barotrauma
- Cannabis Abuse
- Cardiac Arrest
- Cavernous Sinus Thrombosis
- Cerebrovascular Disease (stroke)
- Coma
- Epidural Hematoma
- Epilepsy
- Epilepsy: Complex Partial Seizure
- Epilepsy: Generalized Tonic Clonic Seizure
- Epilepsy: Status Epilepticus
- Heatstroke
- Hepatic Encephalopathy
- Hyponatremia
- Insulinoma
- Intracerebral Hemorrhage
- Intracranial Hemorrhage
- Ischemic Stroke
- Lightning Injuries
- Lung Failure
- Menigitis
- Myocardial Infarction
- Reyes Syndrome
- Shock
- Spinal Cord Injury
- Stroke
- Subarachnoid Hemorrhage
- Ventricular Fibrillation