Prednisone and your speech

Does taking prednisone affect your speech. I have been taking prednisone for Lupus. I was wondering if it makes you talk faster. Sometimes I feel I have no control over my speech. My doctor says he has not heard of it affecting people's speech. He tells me when I feel like I am about to start talking fast to take a deep breath and slow down. This is no consolation to me.I need to know if it's not the medicine than do you have any idea what could make me talk like this?