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First Aid Guides

Electric shock

Causes, signs and symptoms

Some injuries and complications may not be obvious initially. A medical examination is important after any electric shock.

Depending on the length and severity of the electric shock, injuries can include:

  • Burns to the skin
  • Burns to internal tissues or organs
  • Electrical interference or damage to the heart, causing the heart to stop or beat erratically

What causes electric shock?

Some causes of electric shock include:

  • Faulty appliances or equipment
  • Damaged power cords or extension leads
  • Electricity in contact with water or metals
  • Household wiring
  • Downed powerlines
  • Lightning strike

Symptoms of electric shock

Typical symptoms of an electric shock include:

  • Unconsciousness
  • Collapsing after contact with live electricity
  • Difficulty breathing
  • A weak, erratic pulse or no pulse at all
  • Burns, particularly at the place where the electricity entered and exited the body
  • Cardiac arrest