-algia
Meaning of -algia: Pain and nothing more: an ending reporting a symptom the person feels, with no claim about what is causing it.
Definition of -algia
The suffix -algia means pain in the structure named by the root before it. Myalgia is muscle pain, neuralgia is nerve pain, arthralgia is joint pain. It records a symptom rather than a diagnosis, so it states where the pain is felt and says nothing about whether the tissue is damaged, inflamed or entirely normal on examination.
What does the ending report?
An experience, described by the person having it. Pain cannot be measured from outside, so a term built on this ending records what was reported and where. That makes it a starting point rather than a conclusion. A note recording myalgia says the muscles hurt and leaves entirely open whether the cause is a virus, overuse, a medicine, a thyroid problem or something else. The ending appears throughout medicine for exactly that reason, since a symptom has to be named before it can be explained.
How is joint pain different from arthritis?
The two are constantly treated as the same thing, and they are not. Arthralgia means the joint hurts. Arthritis means the joint is inflamed, with swelling, warmth and stiffness that can be found on examination. A joint can hurt with no inflammation at all, and inflammation can be present with surprisingly little pain. Gout shows both at once during an attack, but the terms remain separate descriptions rather than synonyms, and switching one for the other changes what the record claims was found.
Which endings are confused with it?
| Ending | Meaning | Example |
|---|---|---|
| algia | pain in a named part | neuralgia, nerve pain |
| dynia | pain, from a second Greek word | coccydynia, tailbone pain |
| algesia | sensitivity to pain | analgesia, absence of pain |
| itis | inflammation | neuritis, an inflamed nerve |
The pain endings overlap almost completely in meaning, and which one a term uses is a matter of history rather than of any difference in the pain itself. Terms built on algesia belong to a separate group describing how pain is sensed, not where it is felt.
Terms built on -algia
6 entries in this glossary use this word part. Each one follows the same pattern.
- arthalgia A missing letter rather than a different symptom: the same joint pain, spelled the way it…
- arthralgia How many joints hurt, whether they match on both sides, and how long morning stiffness…
- fibromyalgia Pain here is generated by altered processing within the nervous system, which is a…
- myalgia Whether the ache sits in one muscle or everywhere at once is the first question, because…
- neuralgia Pain with no injury underneath it, which is why ordinary painkillers disappoint and drugs…
- thoracalgia Thoracalgia refers to pain in the chest wall or chest region, a symptom that can stem…
Also known as
Used in a sentence
The suffix -algia in the term identified the complaint as pain rather than inflammation.
Good to know
A term ending this way records a reported symptom rather than a finding, so arthralgia states that a joint hurts while arthritis states that it was found to be inflamed.
Word origin
Where “-algia” comes from
From the Greek algos, meaning pain, and the verb algein, to feel pain; the related ending -algesia comes from the same family and describes pain sensitivity.