Hair loss in cats is not just an aesthetic problem – bald patches can indicate underlying health issues. Whether allergies, parasites, or stress: there are many reasons why your cat might suddenly lose its fur.

Possible Causes of Hair Loss in Cats

1. Parasites such as fleas and mites

Fleas, lice, or mites cause severe itching, which can lead to excessive scratching, licking, and thus to bald spots – often on the neck, abdomen, or tail area.

2. Allergies (food, environmental, flea bites)

Cats can react sensitively to certain proteins in food, dust mites, pollen, or flea saliva. Typical signs are itchy, inflamed skin areas and simultaneous hair loss.

3. Fungal infection (Dermatophytosis)

Fungal skin infections are highly contagious and manifest as round, bald spots with scaling. Young or weakened cats are particularly often affected.

4. Hormonal disorders

Thyroid or adrenal gland problems can disrupt the natural shedding cycle and lead to diffuse hair loss – often without itching.

5. Stress or boredom

Psychological stress (e.g., due to moving, new animals, insufficient stimulation) can lead to excessive licking (psychogenic alopecia) – especially on the abdomen and hind legs.

When should you see a vet?

A visit to the vet is strongly recommended if:

• the bald spots are getting bigger or spreading

• the cat scratches or licks intensely

• the skin appears red, scaly, or inflamed

• additional symptoms such as diarrhea, vomiting, or behavioral changes occur

Coat Care & Skin Protection: What you can do at home

• Brush regularly to remove dead hair and promote circulation

• Ensure a high-quality diet with essential fatty acids (e.g., Omega-3 & 6)

• Identify and minimize stress factors

• Create an allergen-free environment (e.g., reduce household dust)

Doderm – for healthy, happy cats

Doderm naturally supports your cat's skin. The antibodies from milk help to promote the balance of the skin flora, soothe irritation, and strengthen the skin barrier. The result: less itching, faster regeneration, and greater well-being.
This allows your cat to do what it loves most – purr contentedly.