Doubt
Behavior is doubtful, but unable to find anything fishy.
(Coming late from school, office or speaking on phone in a low voice etc)
To overcome doubt, doubtful behavior : Gentian
 
Suspicion
Due to possessive nature, developing unnecessary imaginary doubts.
There may be no cause for doubt, the person may keep on doubting if something was wrong.
Ex: Wife returning from office after 10 pm shift getting dropped by her male colleague/boss around 11 pm in his car . Doubting their relationship.
 
Remedies: Chicory, Gentian, Holly, Vine.
(for the suspicious persons with arrogance behavior)