▁head ▁inj uries ▁exist , ▁virt ually ▁any ▁sympt om ▁of ▁brain ▁tra uma ▁can ▁be ▁seen ▁accomp any ing ▁K ern oh an ' s ▁not ch . ▁These ▁sympt oms ▁may ▁range ▁from ▁total ▁par al ysis ▁to ▁simple ▁head ache , ▁n ause a , ▁and ▁vom iting . ▁ ▁Di agn osis ▁Because ▁of ▁the ▁i ps il ater al ▁characteristic ▁of ▁K ern oh an ' s ▁not ch , ▁diagn osis ▁is ▁unique . ▁Many ▁clin icians ▁assume ▁a ▁right ▁s ided ▁par al ysis ▁corresponds ▁with ▁an ▁injury ▁in ▁the ▁left ▁hem is phere ▁of ▁the ▁brain ▁and ▁mis di agn ose ▁K ern oh an ' s ▁not ch . ▁Despite ▁this ▁comp lication ▁that ▁i ps il ater al ▁par al ysis ▁causes , ▁it ▁makes ▁it ▁very ▁easy ▁to ▁diagn ose ▁when ▁couple d ▁with ▁imag ing ▁techniques . ▁For ▁example , ▁when ▁seeing ▁an ▁M RI ▁of ▁a ▁blood ▁cl ot ▁on ▁the ▁left ▁side ▁of ▁the ▁brain ▁couple d ▁with ▁left - s ided ▁par al ysis , ▁it ▁immediately ▁points ▁to ▁K ern oh an ' s ▁not ch . ▁ ▁In ▁most ▁head ▁tra uma ▁cases , ▁CT ▁sc ans ▁are ▁the ▁standard ▁di agnostic ▁method ; ▁however ▁it ▁is ▁not ▁ideal ▁for ▁imag ing ▁small ▁les ions , ▁so ▁M RI ▁is ▁used ▁to ▁identify ▁K ern oh an ' s ▁not ch . ▁It ▁is ▁important ▁to ▁distinguish ▁K ern oh an ' s ▁not ch ▁from