It can be frustrating when scrotal itching persists despite treatment. Since your itching has lasted 10-15 days and hasn't improved, it’s important to have a specialist evaluate you to identify the exact cause and adjust treatment accordingly.

• Persistent scrotal itching may be due to fungal, bacterial infections, eczema, or other skin conditions that sometimes require different or stronger treatments than initial ones.
• Betnovate-GM Cream, which contains a corticosteroid, antibiotic, and antifungal, is often used for such infections, but prolonged or inappropriate use can sometimes worsen symptoms or cause side effects.
• Avoid using any creams longer than prescribed or without medical advice, and keep the area clean and dry.
• You should see a dermatologist (skin specialist) promptly for a thorough examination, possible skin tests, or cultures to tailor treatment effectively.
• If you notice worsening redness, swelling, pain, or any signs of systemic illness (fever, chills), seek urgent medical care.

Consulting a dermatologist will help ensure you get the right diagnosis and treatment plan to relieve your symptoms safely. If you want, I can explain more about possible causes or treatments.To narrow down potential causes, we will need some more information.I understand you've been dealing with persistent scrotal itching for 10-15 days that hasn't responded to treatment. To better assist you, could you please provide your age and gender?