<unk> s, also known as<unk>  shocks,"<unk>  shivers," or "head shocks" are a fairly common withdrawal symptom experienced during discontinuation (or reduction of dose) of SSRI and SNRI antidepressant drugs. The symptom is described as brief but repeated electric shock-like sensations in the<unk>  and head. The effect is not only confined to withdrawal periods for all sufferers, but also are experienced while actually taking the prescribed medication (although less commonly), and have been known to continue for years after withdrawal from the associated medication.
The phenomenon is most commonly associated with paroxetine (Paxil, Seroxat), fluoxetine (Prozac), venlafaxine (Effexor), sertraline (Zoloft), duloxetine (Cymbalta), fluvoxamine (Luvox), citalopram (Celexa) and  escitalopram (Lexapro).
In more recent years, drug companies have added to their list of potential side-effects of many of these medications the possibility of "sensory disturbances", believed to be in reference to the strengthening body of anecdotal evidence about this phenomenon's existence.
Brain zap
Acephaly 
Plagiocephaly
Microcephaly
Tooth fusion
Macrocephaly
Deformational plagiocephaly
Hydranencephaly