A tickle in the throat is normally due to sinus drainage, which can occur from allergies or sinus infections. Both are treatable. Allergies though are much easier to get rid of. These result from adrenal gland dysfunction. Lack of antihistamine and antileukotriene epinephrine and anti-inflamamtory and immune modulating corticosteroids from the adrenals. The adrenals are built up with vitamin C, pantothenic acid, and adaptogenic herbs like schisandra berry, jiaogulan, ashwagandha, Siberian ginseng, suma, licorice root, etc.
Sinus infections are harder to deal with, epecially if they are fungal, which unfortunately are more common.