School will review environmental tests in the area . Activist Erin Brockovich is looking into a 1970 train derailment . `` Conversion disorder '' causes twitching , stuttering , verbal outbursts . It can be caused by many things including drugs and alcohol abuse.
School will review environmental tests in the area . Activist Erin Brockovich is looking into a 1970 train derailment . `` Conversion disorder '' causes twitching , stuttering , verbal outbursts . Mayo Clinic says young females are much more likely to get conversion disorder .