fits / fit

  1. She suffers from epileptic fits.
  2. She suffers from epileptic fit.
  3. She suffers from an epileptic fit.
  4. She suffers from fits.
  5. She suffers from a fit.
    Are they correct?
    Do ‘fit’ and ‘fits’ mean the same?
    Thanks.

One is plural, one is singular.

  1. She suffers from epileptic fits. - okay
  2. She suffers from epileptic fit. - incorrect
  3. She suffers from an epileptic fit. - only if you are describing something happening right now. Otherwise it should be ‘suffered’.
  4. She suffers from fits. - okay
  5. She suffers from a fit. - only if you are describing something happening right now. Otherwise it should be ‘suffered’.

Beeesneees,
6a. She suffered from an epileptic fit.
6b. She suffered from an epileptic fit yesterday.
7a. She suffered from a fit.
7b. She suffered from a fit yesterday.
Are they OK?
Does fits denote epilepsy or fit denote epilepsy?
Please explain. Thanks.

They’re all okay and it would generally be assumed that in 7 or 7a you were speaking about an epileptic fit, unless another reason for the person suffering from fits were given elsewhere. However, just because most people would assume epilepsy in general, it doesn’t mean that any other type of fit should be automatically ruled out. A medical practitioner, for example, would be less likely to make that assumption.