-pathy
Meaning of -pathy: Disease of a named part, used when the process is known to be wrong but not known to be anything more specific.
Definition of -pathy
The suffix -pathy means disease or disorder of the structure the root names. Neuropathy is disease of the nerves, retinopathy of the retina, cardiomyopathy of the heart muscle. It is deliberately unspecific, chosen where damage is present but the process is not inflammation and has not been pinned to a single named condition.
What does the ending say, and what does it leave out?
It says that the named structure is diseased. It leaves out the cause, the mechanism and the outlook. That is not a weakness of the word but the reason it exists, because tissue is often clearly damaged before anyone can say why. A term built this way therefore behaves as a heading covering many possible causes, and a qualifier is usually added in front of it once more is known, as in diabetic retinopathy or alcoholic cardiomyopathy. It sits alongside the general word disorder in that respect.
Which parts of the body take it most often?
Nerves, small blood vessels and organs with fine internal structure, because those are the tissues that fail gradually and diffusely rather than at one identifiable point.
| Term | Root | What it names |
|---|---|---|
| neuropathy | neur, nerve | nerve damage, often numbness or burning |
| retinopathy | retin, retina | damage to the light-sensing layer of the eye |
| nephropathy | nephr, kidney | kidney damage, often found on a urine test |
| cardiomyopathy | cardi, heart, and my, muscle | disease of the heart muscle itself |
| lymphadenopathy | lymphaden, lymph node | enlarged lymph nodes |
| encephalopathy | encephal, brain | disturbed brain function from any cause |
Long-standing diabetes is the clearest illustration, since the same disease damages nerves, retina and kidney and each is named with this ending. Neuropathy is the commonest of the group.
Why does homeopathy use the same ending?
Because a second, older sense of the Greek root survives in a small group of words naming systems of treatment rather than diseases. Homeopathy, naturopathy and osteopathy belong to that group, and none of them means disease of anything. The two senses never overlap in practice, but the shared ending regularly misleads readers meeting these words for the first time.
Terms built on -pathy
9 entries in this glossary use this word part. Each one follows the same pattern.
- adenopathy Adenopathy refers to enlarged lymph nodes, a finding that can result from infection,…
- brachial plexopathy The pattern of what is weak and what is numb points to where along the nerve network the…
- encephalopathy Confusion, drowsiness or a change in personality can all be the visible face of a…
- homeopathy Homeopathy is an alternative medicine system based on treating symptoms with extremely…
- lymphadenopathy Lymphadenopathy is enlargement of one or more lymph nodes, a common finding that can…
- naturopathy A whole system rather than a single treatment, built on the premise that the body heals…
- neuropathy Disease or dysfunction of one or more nerves.
- peripheral neuropathy A nerve problem that causes pain, numbness, tingling, swelling, or muscle weakness in…
- plexopathy A disorder affecting a network of nerves, blood vessels, or lymph vessels.
Also known as
Used in a sentence
The suffix -pathy in the term indicated disease of the nerve without specifying its cause.
Good to know
The ending names damage without naming a cause, so a term such as neuropathy functions as a heading covering many possible processes rather than as a diagnosis in itself.
Word origin
Where “-pathy” comes from
From the Greek pathos, meaning suffering or disease, and pathein, to suffer; the same root produced pathology and, through the sense of feeling, sympathy.