My dosage of seroquel was increased from 25 mg to 50 mg in October 2012. I have begun to itch so bad, in late October, that a red rash develops wherever I have scratched - it doesn't go away. I have been given prednisone, prescription ointments and used over the counter products. Nothing works, the seroquel dosage is the only thing that has changed besides the amount of stress I am having from the constant itch. Help!!!