Why does a cat lose hair and become bald on its neck? - briefly
A cat may lose hair and become bald on its neck due to allergies, parasites, or excessive grooming caused by stress or skin irritation.
Why does a cat lose hair and become bald on its neck? - in detail
Hair loss, particularly around the neck, in cats can stem from various underlying causes, ranging from behavioral to medical issues. One common reason is excessive grooming, often triggered by stress, anxiety, or boredom. Cats may lick or chew their fur excessively, leading to bald patches. This behavior, known as psychogenic alopecia, is more prevalent in indoor cats with limited stimulation. Allergies are another significant factor. Cats can develop allergies to food, environmental allergens like pollen or dust, or even flea bites. These allergies cause intense itching, prompting the cat to scratch or groom the affected area excessively, resulting in hair loss. Parasites, such as fleas, mites, or lice, can also lead to baldness. Flea allergy dermatitis, for instance, causes severe itching and inflammation, often concentrated around the neck and base of the tail. Fungal infections like ringworm, despite its name, are not caused by worms but by a fungus. This highly contagious infection leads to circular patches of hair loss, often accompanied by redness and scaling. Hormonal imbalances, such as hyperthyroidism or Cushing's disease, can disrupt the normal hair growth cycle, causing thinning or baldness. Skin infections, whether bacterial or fungal, can also contribute to hair loss. In some cases, physical irritation from collars or harnesses that are too tight or made of abrasive materials can cause localized hair loss around the neck. Finally, autoimmune disorders, where the cat's immune system attacks its own hair follicles, can lead to bald patches. Identifying the exact cause requires a thorough veterinary examination, including skin scrapings, blood tests, or allergy testing. Early diagnosis and appropriate treatment are crucial to prevent further complications and restore the cat's coat health.