Thank you for contacting Pet Coach with your question about Thor. Poor boy! Try giving him an oatmeal bath, that may help with the itching. Unfortunately, it's illegal for me to recommend any OTC medications. Keep an eye on him, and if the itching gets worse, the bumps spread, his face starts swelling, and/or he has trouble breathing, take him into an ER vet right away. Best of luck, I hope this helps!