Methods and apparatuses for treating a medical disorder by the application of non-invasive electrical stimulation. The applied electrical energy may cause autonomic nervous system (ANS) neuromodulation. In general, described herein are methods for electrical energy to a subject, and particularly to the subject's neck with an electrical waveform adapted to improve the medical disorder. Specifically, described herein are methods and apparatuses for treating a patient having psoriasis by non-invasively applying electrical energy.
