IN humans, allergies are often seasonal. Spring is notorious for causing hay fever, for example. The same applies to animals. We see many more cases of allergic pets in the summer months.
One allergy that can present in a particularly dramatic fashion is mosquito-bite allergy in cats. Affected cats may have a red, swollen, scaly, scabby or ulcerated nose and ears, with flare-ups occurring as the weather gets warmer. These lesions are significantly inflamed and may be uncomfortable or painful. Some cats may have enlarged lymph nodes, particularly around their lower jaw.
The problem is that mozzie-bite allergy in cats can look exactly like some other conditions, like ringworm, which can also infect humans, or squamous cell carcinoma, a form of skin cancer. A biopsy is needed to tell the difference.
The signs are usually managed using corticosteroids, which can be given orally as a tablet or liquid, or via a longacting injection.
Prevention involves reducing contact with mosquitoes. Keep cats indoors, at least at times of the day when mozzies are most active. Ensure your fly screens are in good repair. And consider covering outdoor ponds with mosquito netting.