Devices, systems, and methods are disclosed that allow a patient to self-treat a medical condition, such as a migraine headache,an epileptic seizure, a neurodegenerative disease, such as dementia, Alzheimers disease, ischemic stroke, post-concussion syndrome, chronic traumatic encephalopathy or the like, by electrical non-invasive stimulation of a vagus nerve. The system can comprise a handheld stimulator which is applied to a surface of the patients neck, wherein the stimulator comprises or is joined to a mobile device. A camera of the mobile device may be used to position and reposition the stimulator to a particular location on the patients neck. The system may also comprise a base station that is used to meter the charging of a rechargeable battery within the stimulator. The base station and stimulator transmit data to one another regarding the status of a stimulation session.
