Cats are just as vulnerable to painful conditions as other animals and humans are, however cat behaviour is such that as owners we can often miss the more subtle signs that they show when afflicted by pain. In addition, the cats metabolism means that many conventional painkillers can prove highly toxic and very dangerous to administer. If you are noticing changes of behaviour and activity patterns in your cat, that might reflect underlying pain, it is essential that you consult your veterinary practice.
Animal medicines should always be used responsibly. For more information on responsible use please visit the NOAH pages on this topic.