Itching of the palate is an abnormal sensation caused by a number of factors acting alone or in combination on the palate or the tissues surrounding the palate thereby causing the local release of large amounts of histamine and other mediators that stimulate specific nerve endings in the mucosa of the palate, commonly caused by
Inhalation or ingestion of allergens, resulting in an allergic reaction in the palate or the tissues surrounding the palate.
Viral or bacterial infections, resulting in an inflammatory reaction in the palate or the tissues surrounding the palate.
Irritation of the epiglottis or nasopharyngeal mucosa from not drinking water or from an environment that is too dry, talking or singing a lot, smoking, etc.