MyCat just wants to be alone

Question
Hi, I'm Worried About My 1 Year Old English Short hair Cat,Today my dad went to stroke and give him love but my cat just hissed and growled at him,and then he went under my computer desk and wont come down for food,drinking or for the toilet. Whenever We Step In The Room He Hisses A Growls.My Dad Tried to look for anything unusual but couldn't find anything. Please Help Me !
Alicia.

Answer
This is a good sign that your cat is in pain for some reason. If this cat goes outside he probably has been bit by another cat and is growing an abscess somewhere.

You need to get him out from under the desk and get him into the vets. He will need some antibiotics.

If he doesn't go outside he could very well have hurt his leg or his back jumping around the house. That is the second most common way for a cat to get hurt. The first being bit by another cat.

Either way, the vet needs to see him. He is in a LOT of pain right now.