Why Is My Cat Losing Hair on the Back Legs?

1. Fleas: They usually stay around your cat's hindquarters and base of the tail, which explains why most of the hair loss is concentrated in that area.

2. Allergies: Cats can have allergies to foods, environmental allergens (like pollen), or even an allergy to your medication (if you've let him lick you)!

3. Skin Conditions: Your kitty could be suffering from a skin infection or a skin disease.

4. Stress: Just as humans can lose their hair when they are stressed, long periods of anxiety can cause your kitty to lose hair, usually in patches.

5. Sun Exposure: Too much exposure to the sun's UV rays can cause photodermatitis, which is an inflammation of the skin that leads to hair loss. Usually, you'll see sun-induced bald spots on the ears and nose, but cats who spend a lot of time outdoors may also develop bald spots on their back legs.

6. Hormonal Problems: Hyperthyroidism and Cushing's disease are two common hormonal conditions that can lead to hair loss. Usually, these conditions affect the whole body, not just the back legs, but it can vary.