▁and ▁heart , ▁ac ute ▁ins om nia ; ▁sometimes ▁brought ▁on ▁by ▁a ▁" cr ush " ▁ ▁Ob s ess ive - Comp uls ive ▁dis order ▁- ▁Pre occupation ▁and ▁ho arding ▁val uel ess ▁but ▁super st it iously ▁reson ant ▁items ▁ ▁Psych olog ically ▁created ▁physical ▁sympt oms , ▁such ▁as ▁ups et ▁st om ach , ▁change ▁in ▁app et ite , ▁ins om nia , ▁d izz iness , ▁and ▁confusion ▁ ▁Chron ic ▁neck ▁pain , ▁body ▁trem ors , ▁intr us ive ▁thoughts , ▁frequent ▁flash back s . ▁ ▁Rap id ▁m ood ▁sw ings ▁ ▁According ▁to ▁T all is , ▁many ▁sympt oms ▁of ▁being ▁lov es ick ▁can ▁be ▁categor ized ▁under ▁the ▁D SM - IV ▁( Di agnostic ▁and ▁Statist ical ▁Man ual ▁of ▁M ental ▁Dis orders ) ▁and ▁the ▁I CD - 1 0 ▁( Intern ational ▁Classification ▁of ▁D ise ases ). ▁Ob s ess ive - Comp uls ive ▁dis order ▁( O CD ) ▁is ▁a ▁sympt om ▁of ▁lov es ick ness ▁because ▁it ▁includes ▁a ▁pre occupation , ▁this ▁would ▁include ▁constantly ▁checking ▁one ' s ▁cell phone , ▁Facebook , ▁the ▁ho arding ▁of ▁val uel ess ▁items , ▁etc . ▁A ▁further ▁study ▁conducted ▁by ▁Italian ▁Psych iat rist ▁Don at ella ▁Mar az itt i ▁found ▁that ▁when ▁people ▁fall ▁in ▁love ▁their ▁estimated ▁ser ot on in ▁levels ▁drop ▁to ▁levels ▁found ▁in ▁patients ▁with ▁O