what are the symptoms..probably most know..as most know already what I wrote without having to hear it from me..just writing it here for the few that dont

the mild symptoms could be..besides the obvious temptations

1.Nightmares
2.Psychological (mostly) problems:..anxiety..depression..fears..anger..oppression etc..

(Obviously not always all the above symptoms are caused by interference..but could be)

you can have other physical symptoms like indigestion without cause..but mainly they could be psychological ones

if Catholic you know what to do

Sacraments

and the Blessing..to remove interference

if the symptoms are more severe..Exorcism