Kitten Season: Signs to Watch For in Your New Feline Friend

Bringing home a new kitten is an exciting experience, but young cats can be especially vulnerable to illness and medical problems during their first few months of life. Because kittens have developing immune systems and are adjusting to new environments, it’s important for pet owners to recognize common health concerns early and seek veterinary care when needed. Early diagnosis and treatment can help kittens grow into healthy adult cats.

Upper Respiratory Infections

Upper respiratory infections (URIs) are one of the most common illnesses seen in kittens, especially those adopted from shelters, rescues, or multi-cat households. These infections are often caused by viruses such as feline herpesvirus or calicivirus.

Common signs include:

• Sneezing

• Nasal discharge

• Watery or swollen eyes

• Congestion

• Decreased appetite

• Lethargy

Mild cases may improve with supportive care, including keeping the kitten warm, encouraging food intake, and gently cleaning nasal or eye discharge. More severe infections may require antibiotics for secondary bacterial infections, antiviral medications, appetite stimulants, or fluid therapy if dehydration develops. Kittens with difficulty breathing, severe lethargy, or refusal to eat should be examined promptly by a veterinarian.

Intestinal Parasites

Many kittens are born with or quickly acquire intestinal parasites such as roundworms, hookworms, coccidia, or giardia. These parasites are very common and can cause significant illness if untreated.

Signs of parasites may include:

• Diarrhea

• Vomiting

• Pot-bellied appearance

• Poor weight gain

• Visible worms in stool

• Dehydration

Veterinarians commonly recommend routine fecal testing and preventive deworming for kittens. Treatment depends on the type of parasite identified and may include oral deworming medications or antiprotozoal drugs. Maintaining a clean litter box and following a veterinarian’s deworming schedule are important for preventing reinfection.

Fleas and Skin Problems

Fleas are another common issue in young kittens. Even a small flea infestation can lead to serious problems because kittens are tiny and sensitive to blood loss. Heavy flea burdens can cause anemia, weakness, and pale gums.

Signs of flea infestation include:

• Scratching

• Flea dirt in the fur

• Hair loss

• Skin irritation

• Pale gums or weakness in severe cases

Treatment may involve kitten-safe flea preventatives, flea combing, medicated baths, and environmental cleaning. It is important not to use over-the-counter dog flea products on cats, as some ingredients can be toxic to kittens. Veterinarians can recommend safe and effective flea treatments based on the kitten’s age and weight.

Diarrhea and Gastrointestinal Upset

Digestive upset is very common in kittens and can have many causes, including stress, dietary changes, parasites, infections, or eating inappropriate objects.

Symptoms may include:

• Loose stool

• Vomiting

• Reduced appetite

• Abdominal discomfort

• Dehydration

Because kittens can become dehydrated quickly, persistent vomiting or diarrhea should not be ignored. Treatment depends on the underlying cause and may include dietary adjustments, probiotics, anti-nausea medications, fluids, or parasite treatment. Feeding a consistent, high-quality kitten diet and making food transitions gradually can help reduce stomach upset.

Eye Problems

Eye infections and irritation are frequently seen in young kittens, particularly those with upper respiratory infections. Kittens may develop conjunctivitis, corneal ulcers, or eye discharge.

Warning signs include:

• Squinting

• Redness

• Eye discharge

• Cloudiness

• Swelling around the eyes

Some eye conditions can worsen rapidly and may threaten vision if untreated. Veterinarians may prescribe antibiotic or antiviral eye medications depending on the cause. Kittens with severe squinting, cloudy eyes, or inability to open an eye should be evaluated as soon as possible.

Ear Mites and Ear Infections

Ear mites are microscopic parasites commonly found in kittens. They are highly contagious between pets and can cause significant ear irritation.

Signs often include:

• Head shaking

• Scratching at the ears

• Dark debris in the ears

• Ear odor

• Sensitivity when touched

Treatment typically involves prescription flea medication or ear medications that kill mites and reduce inflammation. Some kittens may also develop secondary ear infections requiring additional treatment. Cleaning the ears improperly at home can sometimes worsen irritation, so veterinary guidance is recommended.

Vaccination and Preventive Care

Preventive care is one of the most important parts of keeping a kitten healthy. Kittens require a series of vaccinations to help protect them from serious infectious diseases such as panleukopenia, calicivirus, herpesvirus, and rabies.

Veterinarians also discuss:

• Spaying or neutering

• Microchipping

• Nutrition

• Parasite prevention

• FeLV/FIV testing when appropriate

Routine wellness visits allow veterinarians to monitor growth, identify medical concerns early, and answer questions about behavior, feeding, and home care.

When to Seek Veterinary Care

Young kittens can become seriously ill faster than adult cats, so it is important to monitor them closely.

Veterinary evaluation is recommended if a kitten develops:

• Difficulty breathing

• Refusal to eat

• Persistent vomiting or diarrhea

• Severe lethargy

• Pale gums

• Significant weight loss

• Eye swelling or cloudiness

• Weakness or collapse

Early treatment often leads to better outcomes and can prevent minor illnesses from becoming emergencies.

Final Thoughts

New kittens bring plenty of energy and affection into a home, but they also require attentive medical care during their early months. Common problems such as respiratory infections, parasites, fleas, digestive upset, and eye conditions are frequently treatable when recognized early. Scheduling regular veterinary visits, staying current on vaccines and parasite prevention, and monitoring for changes in behavior or appetite can help ensure kittens get the healthy start they need.

Worried about Your Kitten’s Health? 

Schedule an appointment with your primary care veterinarian or visit our Burbank or Koreatown location if your pet has concerning symptoms. 

Call us at (818) 296-0700 in Burbank or (323) 302-5200 in Koreatown to speak with a member of our care team. We’re here to help for your furry loved one’s medical needs!