"Complain of" or "complain about"?

Hello All!
Can anybody comment on grammatical or stylistic differences in use of "complain of" and "complain about"? Examples and/or useful web links will be of great help also.
Regards and thanks,
Lidia Novichkova

[nq:1]Can anybody comment on grammatical or stylistic differences in use of "complain of" and "complain about"? Examples and/orwill be of great help[/nq]
These phrases overlap semantically, i.e. are interchangeable in half or more of all possible sentences. But a distinction remains, e.g. it is better to say:
Robert complained of toothache (not about)
Robert complained about the bus se

[nq:1]I'm more likely to complain about an external annoyance such as an untidy room. I wouldn't complain of an untidy room.[/nq]
In its intransitive form as with "to snow" "or to sleep": it is as above.

But isn't it a transitive verb when used in the legal sense of lodging a complaint?
Or a psychological sense when your body complains about (for example) the snow or lack of sle

[nq:2]I'm more likely to complain about an external annoyance such as an untidy room. I wouldn't complain of an untidy room.[/nq]
[nq:1]In its intransitive form as with "to snow" "or to sleep": http://dictionary.reference.com/search?q=complain%20 it is as above. But isn't it a ... the snow or lack

[nq:1]Can anybody comment on grammatical or stylistic differences in use of "complain of" and "complain about"? Examples and/orwill be of great help also.[/nq]
As others have pointed out, they overlap. But I would say "complain about" is the more literal of the two, the implied "complaint" usually being a specific act of speech or writing; "complain of" is the more figurative, where the "compl