Burning / Tingling in Arms, Legs and Face After Botox

40 Units Botox in Forehead 10 Weeks Ago. 2 days after treatment experinced headaches, extreme fatigue, nausea, loss of appetite & sharp pains & a burning sensation in arms & legs at night. most seemed to resolve after a couple of weeks but the intense burning sensation/tingling continues now both during day & night. now also in arms, legs, hands, feet & sometimes in face all labs came back neg, will be seeing a neurologist soon. my dr says a reaction to botx & should settle down once botox wears off. any thoughts?