Red itchy bumps on testicles probably suggest genital nodular scabies. Is there any prior history of itching elsewhere on body? If your sexual partner had any history of itching? Genital scabies may be sexually transmitted. You may need systemic as well as topical antiscabetics, antihistamines and if required intralesional triamcinolone injection
Next Steps
Show to your nearby qualified dermatologist.
Health Tips
Treatment of close contact may also be required