Is Skin Allergy Hereditary?

I'm asking for my friend who is a siamese breeder.

She has a male siamese that have a skin allergy and she considers to neuter him because she doesn't want to breed him if the allergy is hereditary.
Does anyone of you know something about this and can give me some links?

Sorry about my bad english...

Skin allergies are normally the manifestations of food allergies. What exactly do you mean by skin allergies? Are there raised bumbs, is there fur missing? If so, where on the body does that happen? Are you certain it isn't a stubborn case of ringworm?

I would suggest if this hasn't already been done that your friend consult her vet regarding a skin scraping to rule out other causes such as mites. If this has already been done, she may also want to speak with her vet and look into a different diet.

Until you have more information, I wouldn't go so far as to neuter this boy.

The vet has done some tests, and it's not ringworm but an allergy of a kind. He gets a rash or he itches on his ears and around the neck and even under his paws.
He gets small round bald patches, so first the breeder thought it was ringworm, but it wasn't.
Now he gets fishoil-supplement and is doing fine. But if he misses a dose, he's back to scratching..

As far as I know skin allergies are not hereditary.

But unless your friend's cat is a top quality male and worthy of breeding to better the breed; not breeding cause its a "siamese", then the male should be neutered.

Male cats will spray if not neutered. They will constantly want to breed females and try to get outside and find them. That results in parasites, FELV, FIP and fighting with other males (and more vet expenses). A happy cat is a spayed/neutered cat