Is there a less colloquial term for the phenomenon known as "brain zaps"? There is an unpleasant phenomenon, colloquially known as "brain zaps".  It is generally associated with withdrawal from antidepressants, but this isn't always the trigger - I sometimes have it even though I've taken my mess that day.

I don't like referring to something so unpleasant and uncomfortable by such a silly name.  Is there a proper medical term for this phenomenon?
Short answer
Brain zaps are a colloquial term for certain symptoms of antidepressant discontinuation syndrome. 

Background
'Brain zaps' are associated with sudden shakes, or vibrations, tremors, jolts, electric shocks, or 'zaps' of the head and/or brain. As SydneyMaples rightfully commented, these are scientifically recognized as symptoms of 


  Antidepressant discontinuation syndrome, or Antidepressant withdrawal syndrome


Withdrawal from a wide range of antidepressants, including the tricyclic antidepressants (TCAs), monoamine oxidase inhibitors (MAOIs) and selective serotonin reuptake inhibitors (SSRIs) can produce somatic and psychological distress, influenza-like syndromes, gastrointestinal adverse effects, arrhythmias, anxiety, sleep disturbances, movement disorders, mania or hypomania, panic attacks and delirium (Lejoyeux et al., 1996).

Reference
- Lejoyeux et al. CNS Drugs (1996); 5(4): 278–92