Yes, you can absolutely insure a pet with pre-existing medical conditions! Even though ManyPets won't be able to cover a pre-existing condition, the pre-existing condition exclusion won’t apply to any other unrelated conditions if they don’t pre-exist your pet insurance plan.
So even if your pet’s skin allergies aren’t eligible for coverage, a future round of cancer treatment might be. In fact, it’s wise to get covered as soon as possible, before even more conditions arise and you become ineligible for coverage.
Also, keep in mind that some conditions may once again be eligible for coverage after 18 months have passed with no treatment, diagnosis, or symptoms.