Yes, your cat can have Allergies.
There are a lot of articles and more information about cat allergies on the web. Other then that the best thing to is to do use google or ask the vet or the doctor, I believe that would help the best. "http://www.ehow.com/about_4796050_cat-allergy-medication.html"
Not if they're Cali
You can find out about cat food allergies from your local veternarian. A website that discusses about cat food allergies you may want to consider looking at is http://www.littlebigcat.com/health/food-allergies-in-cats/ .
It is the dander of a cat that can cause allergies in humans. The hair of a Persian cat can cause allergies.
The best way to administer a pill to a cat is to wrap the pill in a treat or use a pill pocket, hold the cat gently but firmly, open its mouth, place the pill at the back of the tongue, and close the mouth to make sure the cat swallows the pill.
Vacuuming and spraying with a antiallergy spray with prevent cat allergies.
A sphinx cat only has a layer of fuz that is very thin that won't set of your cat dandruff allergies.
Yes, cat allergies can be tested through skin prick tests or blood tests to detect specific antibodies to cat allergens.
Garlic is actually toxic to cats, so which is most likely why your cat is having bad reactions to it. As for general allergies, they certainly can. I once had a cat with severe allergies. Cats can develop allergies to many things, although it is becoming increasingly common for a cat to develop allergies to corn and gluten often found in cheaper commercial food brands, and to household chemicals.
yes
There is no patron saint of allergies of any kind.