Acute pain — Pain in response to injury or another stimulus that resolves when the injury heals or the stimulus is removed. Chronic pain — Pain that lasts beyond the term of an injury or painful stimulus. Can also refer to cancer pain, pain from a chronic or degenerative disease, and pain from an unidentified cause.
http://medical-dictionary.thefreedictionary.com/Pain
1 A personal offense is like a scratch on a phonograph record. 2  I couldn't move my thoughts beyond my pain It kept repeating, as if I were stuck within its grooves. 3  There was only one way to play beyond it. 4  I had to forgive them, so my heart could take its form again.
http://www.thesaurus.net/pain
These include previous experience with pain, training in regard to how one should respond to pain and discomfort, state of health, and the presence of fatigue or physical weakness. One's degree of attention to and distraction from painful stimuli can also affect one's perception of the intensity of pain.
http://medical-dictionary.thefreedictionary.com/Pain
English Collins Dictionary-English synonyms & Thesaurus &nbsp. pain (pains plural & 3rd person present) (pained past tense & past participle) 1 n-var Pain is the feeling of great discomfort you have, for example when you have been hurt or when you are ill. ...back pain., ...a bone disease that caused excruciating pain..., I felt a sharp pain in my lower back..., ...chest pains.
http://dictionary.reverso.net/english-synonyms/pain
One such system, the opioid system, involves the production of morphinelike substances called enkephalins and endorphins. Both are naturally occurring analgesics found in various parts of the brain and spinal cord that are concerned with pain perception and the transmission of pain signals.
http://medical-dictionary.thefreedictionary.com/Pain
Pain is an unpleasant feeling that is conveyed to the brain by sensory neurons. The discomfort signals actual or potential injury to the body. However, pain is more than a sensation, or the physical awareness of pain; it also includes perception, the subjective interpretation of the discomfort. Perception gives information on the pain's location, intensity, and something about its nature.
http://medical-dictionary.thefreedictionary.com/Pain
pain. 1 n-var Pain is the feeling of great discomfort you have, for example when you have been hurt or when you are ill. ...back pain., ...a bone disease that caused excruciating pain..., I felt a sharp pain in my lower back..., ...chest pains.
http://dictionary.reverso.net/english-synonyms/pain
INFORMAL. ♦ a pain/a pain in the neck/a pain in the arse/a pain in the backside phrase pain inflects, v-link PHR, PHR to-inf (disapproval). 5 If someone is at pains to do something, they are very eager and anxious to do it, especially because they want to avoid a difficult situation.
http://dictionary.reverso.net/english-synonyms/pain
it V n to-inf, Also it V n that 4 In informal English, if you call someone or something a pain or a pain in the neck, you mean that they are very annoying or irritating.
http://dictionary.reverso.net/english-synonyms/pain
Synonyms: distressingness, pain, painfulness, pain in the neck, hurting, nuisance, botheration, infliction, pain in the ass, annoyance, painful sensation, pain sensation, bother. Antonyms: pleasance, pleasure. pain, pain sensation, painful sensation (noun). a somatic sensation of acute discomfort.
http://www.synonyms.net/synonym/pain
another word for pain
An another word for pain is distressingness. Distressingness is the another word for pain.