If you've noticed your puppy losing hair and developing a red, bald patch on their skin, it's likely due to a bacterial skin infection or inflammation. This condition usually requires medication to manage. Once the underlying issue is resolved, your puppy's hair should grow back.

Possible Causes of Hair Loss and Red Skin
Redness and hair loss in dogs often indicates a bacterial skin infection or localized inflammation. Oral antibiotics can help control the infection, while topical anti-inflammatory medications can soothe the affected area. Allergic reactions can also cause skin redness and swelling. Identifying and eliminating the allergen is essential. Antihistamines can help alleviate symptoms. If the condition doesn't improve, it's crucial to take your dog to a veterinarian for a diagnosis and appropriate treatment. Minor skin issues such as scratches or insect bites may heal on their own. Regular external parasite prevention is also important to maintain healthy skin in dogs.
Treatment Options for Hair Loss
A bald patch on a puppy may result from fungal or bacterial infections. To treat this, you can use products like Pooan's Fnuon Skin Spray and Fuanter Ketoconazole Compound Ointment, specifically formulated for bacterial and fungal skin issues. When applying these treatments, ensure your puppy wears an Elizabethan collar to prevent them from licking the medication, which could reduce its effectiveness.