Nocebo is not generally fake or woo.
I suspect though that to no small extent, such syndroms are diagnosed as a result of confirmation bias on the part of the physician (i.e.
Observer-expectancy effect) or the patient (
Subject-expectancy effect): People, or their doctors, observe more keenly than they normally do, and ascribe whatever previously unnoticed deviation from perfect they find, to the new "cause". Perhaps you have lost hair for a while now, but only now noticed? Correlate it with whatever new device you spot in your vicinity, et voilà!
Since "Wind turbine syndrome" is correlated with news about Wind turbine syndrome, Trump may soon be responsible for more case of Wind turbine cancer!