Pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage. Pain is evaluated based on the feeling of the person in pain because pain is a subjective experience that only the person in pain can perceive, and it cannot be felt by others or measured and documented with a specific test or device.
First: Pain can be divided into two types, depending on the length of time it causes a problem for the patient:
Acute pain usually begins suddenly and has a specific cause. It lasts less than 3 – 6 months, and disappears when its causes disappear. When the pain disappears, the person returns to his normal life completely.
Examples of diseases that cause severe pain:
– Bone fractures.
– Burns and wounds.
– Dental pains and procedures.
– Childbirth pain.
Chronic pain lasts for more than 6 months, even after the primary cause of the pain has disappeared. Chronic pain may last from months to years, and range from moderate to severe. Therefore, without proper diagnosis and treatment, chronic pain affects the quality of life, and the patient may suffer from depression and anxiety resulting from the continued presence of permanent pain.
Chronic pain is associated with:
– Headache (headache).
– Back pain.
– Chronic tissue and muscle pain syndrome.
Chronic pain can be accompanied by a group of different symptoms, which increase the patient’s psychological and physical exhaustion, such as:
– Muscle spasm.
– Limited mobility.
– Loss of energy.
– Changes in appetite.
Second: Pain is divided according to the type and location of sensory receptors into: