Understanding Ringworm in Cats: Causes, Symptoms, and Treatment

By Alberto Roy

Published on:

Ringworm is a common fungal infection that can affect cats, causing discomfort and potential health risks. Despite its name, ringworm is not caused by a worm but rather by various fungi that invade the skin, hair, and nails of both animals and humans.

In this article, we will explore the causes, symptoms, and treatment options for ringworm in cats, enabling cat owners to recognize and address this condition promptly. Or you can learn more about ringworm through Puainta’s health guide.

Symptoms of Ringworm in Cats

The symptoms of ringworm in cats can vary, but there are several common indicators to watch out for:

1. Itching and Irritation

Cats with ringworm may experience itching and discomfort in the affected areas. They may scratch excessively or groom excessively, leading to further hair loss and skin damage.

2. Skin Inflammation

In some cases, ringworm can cause inflammation of the skin, resulting in redness, swelling, and even the development of pus-filled sores.

3. Circular Lesions

Ringworm typically presents as circular patches of hair loss with scaly or crusty skin. The edges of these lesions often appear red or inflamed, giving rise to the characteristic ring-like appearance. However, not all cases exhibit the classic ring-shaped pattern.

4. Brittle or Broken Hair

Infected hair follicles can become weak and brittle, causing the fur to break or fall out easily. This can lead to bald patches or a generally scruffy coat.

Causes of Ringworm in Cats

Ringworm in cats is primarily caused by three types of fungi: Microsporum canis, Microsporum gypseum, and Trichophyton mentagrophytes.

These fungi thrive in warm and humid environments, making cats more susceptible to infection if they live in crowded or unhygienic conditions. Additionally, ringworm can be contracted from infected animals, contaminated objects, or even through contact with soil where the fungus is present.

How Does Ringworm Spread in Cats?

Ringworm in cats is highly contagious and can easily spread from one feline to another. Understanding how ringworm spreads is crucial in preventing its transmission. Here are the primary ways in which ringworm can spread in cats:

Direct Contact: Direct contact with an infected cat is one of the most common ways ringworm spreads. This can occur through activities such as playing, grooming, or fighting with an infected cat. The fungal spores present on the infected cat’s skin, hair, or nails can transfer to the healthy cat, leading to infection.

Indirect Contact

Ringworm can also spread indirectly through contaminated objects or surfaces. Fungal spores can survive for extended periods on items such as bedding, brushes, combs, blankets, or furniture. If a healthy cat comes into contact with these contaminated objects, the spores can adhere to their fur or skin, leading to infection.

Environmental Contamination

The fungal spores that cause ringworm can survive in the environment for a significant period, making it possible for cats to contract the infection from contaminated areas. Spores can be found in soil, carpets, upholstery, or other surfaces that have been in contact with infected animals. Cats that roam outdoors or live in crowded or unsanitary conditions are at a higher risk of exposure to contaminated environments.

Human Transmission

Although less common, humans can also transmit ringworm to cats. If a person has ringworm on their skin or clothing and comes into contact with a cat, the fungal spores can transfer to the cat’s fur, leading to infection.

It is important for individuals who have ringworm to practice good hygiene, including thorough handwashing, and avoid close contact with cats until the infection is resolved.

Preventing the Spread of Ringworm in Cats:

To prevent the spread of ringworm in cats, it is important to take the following precautions:


If your cat has been diagnosed with ringworm, isolate them from other cats or animals in the household. This helps prevent the transmission of the infection.

Good Hygiene

Practice good personal hygiene when handling an infected cat or cleaning their living environment. Wash your hands thoroughly with soap and water after handling an infected cat or any potentially contaminated objects.

Cleaning and Disinfection

Regularly clean and disinfect your cat’s bedding, toys, litter boxes, and any other items they come into contact with. Vacuum carpets, upholstery, and other surfaces to remove fungal spores.

Environmental Management

Limit your cat’s access to areas that may be contaminated with fungal spores, such as soil or areas where infected animals have been present.

Veterinary Guidance

Consult a veterinarian for appropriate treatment and guidance on how to manage the infection effectively. They can provide advice on specific disinfectants, antifungal medications, and environmental decontamination strategies.

By being vigilant, practicing good hygiene, and taking necessary precautions, you can minimize the risk of ringworm spread in cats and promote a healthy environment for your feline companion.

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