Ear issues

Hi everyone. Just a quick question....Danger (he is 4 years old) has been having some issues with his ears the last couple of days. He has been scratching at them an also shaking hi head alot. He doesn't like when I touch his ears so I can't really get a good look inside. Does anyone have any suggestions on what to do to help him? Is there anything I can buy to clean hi ears or an ointment or anything. I feel bad that there is nothing I can do to help him. Please help!