Transmission from other animals or the environment : Some types of fungi can spread from infected animals, unclean environments, and humid air. When fungi settle on a cat's skin and accumulate for extended periods, they grow, leading to feline skin diseases and fungal infections.

Weakened immune system : If a cat has a weakened immune system, such as from an underlying medical condition or treatment with immunosuppressant drugs, it is more susceptible to fungal infections than a cat with a normal immune system.

Direct contact with fungi : When cats go outside and come into contact with objects that harbor fungi, including contact with unclean clothing or bodies, they can transmit fungi to their fur and skin, leading to skin diseases.

Unclean or damp environment : Cats kept indoors can also develop skin diseases if that indoor environment is unclean and highly humid, such as bathrooms, kitchens, and rooms without ventilation. Dirty bedding and unclean personal hygiene can also increase the risk of fungal infections in cats.

Stress or psychological factors : Cats experiencing stress or life changes, such as moving to a new home or adding a new family member, may have a weakened immune system. This situation increases the likelihood of fungal infections. If you notice any abnormalities in your cat, such as redness, peeling skin, or itching, you should take them to a veterinarian for proper examination and treatment.

Characteristics of feline fungal infection.

Fungal infections in cats will present with symptoms and signs that can be observed through changes in the cat's skin, such as:

Patchy hair loss: The skin will begin to peel or develop small sores in infected areas, such as around the ears, forehead, and front legs.

Red rash, red bumps, or dandruff-like scales: Sometimes, a cat's skin with a fungal infection or skin disease may have red, swollen, or inflamed lesions that are circular or oval in shape, with well-defined borders, dry skin, and scaling.

Your cat will scratch frequently: Your cat will experience itching or a burning sensation in the infected area. Frequent scratching can cause the skin to become inflamed and develop sores. If you notice these symptoms in your cat, you should take them to a veterinarian for proper diagnosis and treatment, as treating fungal infections usually requires time and consistent care.

There are many types of feline fungal infections. 

There are many types of fungi found in cats, most of which are commonly found in feline skin diseases.

Microsporum canis is the most common fungus and the primary cause of dermatophytosis (a fungal skin infection in cats). This fungus is particularly dangerous because it can spread to humans, especially young children and those with weakened immune systems, allergies, or general malaise. Direct contact with infected cats significantly increases the risk of infection.

Trichophyton mentagrophytes: Another fungus that can cause skin disease in cats. The symptoms are similar to Microsporum canis, characterized by patchy hair loss, scaly, dandruff-like patches, dehydrated, flaky skin, and frequent scratching can lead to abrasions. If the fungus comes into contact with other areas of the body, it can spread.

Malassezia pachydermatis is a type of yeast that lives on the skin of mammals, including cats. It's commonly found on normal skin and doesn't cause problems unless there's an excessive amount. However, when certain factors stimulate it, such as a weakened immune system, a damp environment, unclean bedding, or a compromised immune system in cats, this yeast can multiply rapidly and cause skin inflammation. 

summarize

Fungal infections in cats can be caused by many factors, and some types of fungi may present with different symptoms. Therefore, if you suspect your cat may have a fungal infection, you should consult a veterinarian for an accurate diagnosis and appropriate treatment tailored to the underlying cause.