I have a specific problem with acne, but I thought I'd keep the title open-ended so anyone can post their own questions about acne to keep this thread applicable to more people. I've had small acne marks dispersed more or less evenly around my face for my whole adult life. For the past few months at least if not longer I've had one large patch of acne only on the left side of my face. I've had 2 crashes in the past 6 months. I can think of more information later, but I'm wondering if anyone knows what could cause it. I almost positive I have Lyme. I've also considered possible mercury exposure due to a cracked tooth with an amalgam, but I'm much less certain about this.