Why do need a vet?
If you find the allergen, that is all. Just do not use that product. There is no treatment, vet, med etc.
If you dont find the allergen that will be difficult and need treatment indeed.
But start simple, by looking for the allergen.
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If you have dogs outside (on the street) the solution is to have good yard fence. It is ok if you have trees for the cat to climb, but can the cat climb them?
Better not to let dogs enter the yard anyway.
If the weather is to cold, you can arrange a dog kernel + a heating lamp. And check time to time whether the temperature is OK.
Yes, you shoould neuter the cat before letting her outside. That is going to cost, but you can approach a shelter or even a vet cabinet. In my country some vet cabinets do neuter for free in some social cases. Just ask.
If you find the allergen, that is all. Just do not use that product. There is no treatment, vet, med etc.
If you dont find the allergen that will be difficult and need treatment indeed.
But start simple, by looking for the allergen.
====
If you have dogs outside (on the street) the solution is to have good yard fence. It is ok if you have trees for the cat to climb, but can the cat climb them?
Better not to let dogs enter the yard anyway.
If the weather is to cold, you can arrange a dog kernel + a heating lamp. And check time to time whether the temperature is OK.
Yes, you shoould neuter the cat before letting her outside. That is going to cost, but you can approach a shelter or even a vet cabinet. In my country some vet cabinets do neuter for free in some social cases. Just ask.