Originally Posted by SoLiDUS

Beautiful women- Caligynephobia. (dare I say more gentlemen ? lol)

Defeat- Kakorrhaphiophobia.
Open high places- Aeroacrophobia.
Ridiculed, being- Catagelophobia
People in general or society- Sociophobia. (yes... 'tis true)
Rectum or rectal diseases- Proctophobia or Rectophobia. (lol !)
Brain disease- Meningitophobia.
Crowded public places- Agoraphobia. (not really a phobia, but I hate crowds)
Darkness- Achluophobia (well, in wide open places I have no control over)

But they can all be grouped into one phobia:

Situations, certain- Topophobia.