The prescribing information for Zoloft (Sertraline hydrochloride) does list paresthesia, aside from somnolence, dizziness, headache, and tremor, as a CNS-related adverse reaction of this drug.
If the symptom goes away after stopping the Zoloft, then it really is probably due to the drug. If this symptom bothers you, consult your physician for an alternative medication.
Also I am not on any other meds. My labs are good. Cher23