First aid is the first and immediate assistance given to any person suffering from either minor or serious illness or injury, with care provided to preserve life, prevent the condition from worsening, or to promote recovery.

The aims of first aid are to preserve life, prevent harm, and promote recovery. In first aid, ABC stands for airway, breathing, and circulation.
The recovery position helps minimize further injury. First aid is vital for saving lives. A person can carry out first aid after a life-threatening incident or injury before the arrival of emergency services.

At any moment, you or someone around you could experience an injury or illness. Using basic first aid, you may be able to stop a minor mishap from getting worse. In the case of a serious medical emergency, you may even save a life. First aid can treat all sorts of minor bumps and scrapes, but you should see a doctor for more serious accidents. You may want to think about getting a first aid kit for your house or training in first aid so that you are prepared to deal with minor accidents.

First aid is not a full medical treatment.