Symptoms Of Allergies In Cats
Allergies in cats can often present with overlapping symptoms, varying in severity and sometimes taking years to manifest fully.
Though bearing a close resemblance to environmental allergies in appearance, not every feline with food sensitivities will display gastrointestinal symptoms such as vomiting, diarrhea, excessive gas, or drooling; a significant number might exhibit skin irritations, with itchiness prevalent around the face, head, and neck. These reactions tend to be persistent throughout the year, irrespective of seasons.
Atopic Dermatitis
Cats with atopy or environmental sensitivities might show signs that closely resemble those of food allergies. The primary symptom is itchiness, followed by ear infections, hair loss, skin patches, and breakouts. Often, secondary bacterial and fungal infections are a recurring issue. Additionally, atopy may lead to respiratory complications like asthma and eye inflammation.
Fleas specifically target the skin. Cats with this allergy usually haven't been adequately protected against fleas. The affected areas are the face, neck, inner thighs, and belly. The itching can be so severe that cats injure themselves through persistent scratching, biting, and rubbing.
Allergic Contact Dermatitis
Triggered by direct exposure to specific irritants like pollen, mites, or yeast, allergic contact dermatitis manifests as skin breakouts where contact is made. Common signs include redness, inflammation, breakouts, and crusty patches. The itching at the affected spots can range from mild to intensely aggravating.
Skin Reactions to Medications
These allergic responses to specific medications vary widely in their presentation, location, and intensity. Cats might show itchiness, rashes, inflammation, swelling, and hives. In extreme cases, the skin may undergo cellular damage and peel off. This allergy type is relatively rare in cats.
Respiratory Allergies (Asthma)
Also recognized as allergic bronchitis, affected cats often display symptoms like wheezing, persistent coughing, and difficulty breathing.
How Veterinarians Test for Allergies in Cats
Food Allergy
In felines suspected of food allergies, the primary method of diagnosis is a dietary elimination trial. Although there are saliva test kits available online and blood tests that claim to detect food allergies, their reliability still needs to be proven.
Typically, a diet trial is conducted in one of two approaches:
- Novel Protein Diets: This involves removing the suspected allergens (like beef, chicken, or fish) and introducing a unique protein source the cat's immune system hasn't encountered before. This reduces the likelihood of a reaction. These alternative proteins include salmon, turkey, kangaroo, rabbit, duck, venison, and whitefish.
- Hydrolyzed Protein Diets: These diets consist of ingredients processed to their minimal molecular size to prevent triggering an immune response.
A noticeable improvement from such diet trials may take two to three months. These trials can be challenging and might yield ambiguous results, especially when other allergies are present or if there needs to be more adherence to the problem. Throughout this trial, the cat must avoid other foods, treats, or human food to maintain the trial's integrity.
Atopic Dermatitis
To pinpoint specific environmental allergens, veterinarians typically rely on two primary diagnostic methods:
- Serology Allergy Testing: This evaluates the blood for specific allergen reactions. It's a straightforward procedure that many general vet clinics can execute.
- Intradermal Testing: Recognized as the definitive diagnostic technique, this test is usually undertaken by veterinary skin specialists. During the procedure, allergens are injected under the skin, and a raised bump or swelling indicates sensitivity to that specific allergen. Sedation is often required for this test.
Flea Allergy Dermatitis
Identifying fleas and traces of flea debris can aid in detecting a flea allergy, though it's not always necessary. A flea comb can be beneficial in spotting fleas.
Blood assays, similar to those for environmental skin reactions, can assist in determining an allergy to fleas. Often, veterinarians may decide on a flea allergy diagnosis based solely on a clinical evaluation and the pet's history. A noticeable improvement after implementing suitable flea prevention measures often confirms the diagnosis.
Allergic Contact Dermatitis
Determining the root cause of allergic contact dermatitis is akin to solving a mystery, requiring patience and commitment from the pet owners. To diagnose this condition, veterinarians employ a patch test. Items from the home or external surroundings are placed on specific body parts and monitored throughout 7 to 14 days. When contact dermatitis is suspected, biopsies can be a valuable diagnostic tool.
Skin Reactions to Medications
Diagnosis of drug reactions often hinges on a timeline: the cat showing symptoms shortly after administering a medication and a subsequent recovery once the drug is ceased. While any medication can potentially cause a skin response, certain drugs are known to have a higher likelihood, making veterinarians more vigilant.
Respiratory Allergies (Asthma)
Asthma is commonly identified through radiographic imaging, commonly known as X-rays. In addition, veterinarians typically conduct blood tests to assess the cat's general health and might carry out cultures to exclude other potential conditions.
