▁the ▁person ▁has ▁g astr ic ▁acid ity ▁and ▁develop s ▁re - fl ux ▁during ▁sleep , ▁where ▁the ▁g astr ic ▁acid ▁causes ▁ir rit ation ▁which ▁will ▁cause ▁the ▁sp asm ▁attack . ▁ ▁It ▁is ▁also ▁a ▁sympt om ▁of ▁Hyp op ar ath y roid ism . ▁ ▁Pre vention ▁Due ▁to ▁the ▁shape ▁of ▁the ▁st om ach ▁and ▁position ▁of ▁the ▁es oph ag us , ▁sleep - related ▁l ary ng osp as ms ▁may ▁be ▁prevent ed ▁by ▁sleep ing ▁on ▁the ▁left ▁side , ▁which ▁can ▁help ▁in ▁keeping ▁st om ach ▁acid ▁from ▁entering ▁the ▁es oph ag us ▁and ▁reaching ▁the ▁vocal ▁c ords . ▁ ▁When ▁l ary ng osp asm ▁is ▁coinc ident ▁with ▁a ▁cold ▁or ▁flu , ▁it ▁may ▁be ▁helpful ▁for ▁some ▁suffer ers ▁to ▁take ▁acid ▁re fl ux ▁medic ation ▁to ▁limit ▁the ▁ir rit ants ▁in ▁the ▁area . ▁ ▁If ▁a ▁c ough ▁is ▁present , ▁then ▁treat ▁a ▁wet ▁c ough ; ▁but ▁limit ▁c ough ing ▁whenever ▁possible , ▁as ▁it ▁is ▁only ▁likely ▁to ▁trigger ▁a ▁sp asm . ▁ ▁Dr ink ▁water ▁or ▁tea ▁to ▁keep ▁the ▁area ▁from ▁dry ing ▁up . ▁ ▁Sal ine ▁dro ps ▁also ▁help ▁to ▁keep ▁the ▁area ▁mo ist . ▁ ▁Pse udo e ph eder ine ▁may ▁also ▁help ▁to ▁clear ▁any ▁m uc us ▁that ▁may ▁cause ▁c ough ing ▁and ▁thereby ▁trigger ing ▁more ▁sp as ms .