▁she ▁tries ▁to ▁find ▁answers ▁about ▁the ▁myster ious ▁ill ness ▁she ▁was ▁diagn osed ▁with . ▁The ▁motiv ation ▁for ▁S ny der ▁was ▁her ▁fl uct u ating ▁partial ▁improvements ▁followed ▁by ▁rela ps es ▁of ▁deb il it ating ▁sympt oms ▁she ▁experienced . ▁S ny der ▁was ▁given ▁many ▁contradict ory ▁diagn oses ▁for ▁her ▁sympt oms ▁along ▁with ▁various ▁dru gs ▁that ▁were ▁of ▁no ▁help ▁to ▁her . ▁ ▁The ▁movie ▁explains ▁that ▁there ▁are ▁medical ▁exper ts ▁that ▁refuse ▁to ▁believe ▁the ▁ill ness ▁exists , ▁and ▁among ▁those ▁that ▁do , ▁no ▁one ▁knows ▁what ▁causes ▁it , ▁how ▁a ▁person ▁acqu ires ▁it , ▁or ▁how ▁it ▁may ▁be ▁c ured . ▁ ▁S ny der ' s ▁movie ▁research es ▁the ▁history ▁of ▁the ▁disease ▁which ▁takes ▁her ▁to ▁Florida ▁where ▁a ▁cluster ▁out break ▁occurred ▁in ▁ 1 9 5 6 , ▁and ▁to ▁Lake ▁T ah oe ▁Nev ada ▁where ▁many ▁people ▁became ▁ill ▁in ▁the ▁mid - 1 9 8 0 s . ▁The ▁Florida ▁vict ims ▁were ▁women ▁who ▁were ▁" des cribed ▁in ▁a ▁medical ▁journal ▁as ▁having ▁h yst er ical ▁par al ysis ." ▁She ▁interview ed ▁several ▁of ▁the ▁women ▁who ▁became ▁ill ▁and ▁later ▁recovered . ▁A ▁group ▁still ▁meets ▁to ▁discuss ▁their ▁experiences ▁with ▁the ▁ill ness . ▁The ▁Nev ada ▁group ▁was ▁a ▁severe ▁out break ▁and ▁S ny der ▁interview ed ▁tre ating ▁doctor ▁Daniel ▁Pet erson ▁along ▁with ▁several ▁of