* Ringworm: This fungal infection can cause hair loss, crusty skin, and sometimes itching.
* Mites: Mites burrow into the skin, causing irritation and hair loss.
* Fleas: Fleas can cause itching and hair loss.
* Allergies: Some guinea pigs can develop allergies to their bedding, food, or other environmental factors, leading to skin irritation and hair loss.
* Stress: Stress can cause hair loss in guinea pigs.
* Poor diet: A diet lacking in essential nutrients can weaken the skin and lead to hair loss.
* Vitamin C deficiency: Guinea pigs need vitamin C in their diet, and a deficiency can cause various health problems, including hair loss.
* Medical conditions: Certain medical conditions, like hormonal imbalances or thyroid problems, can cause hair loss in guinea pigs.
It's crucial to consult a veterinarian if you notice any bald spots or changes in your guinea pig's fur. They can diagnose the underlying cause and recommend appropriate treatment.
Remember: Guinea pigs are sensitive animals and need a proper diet, clean environment, and regular vet checkups to stay healthy.