Tingling of the scrotal skin may be caused by testicular inflammation, eczema, allergy and other reasons. 1. Testiculitis: due to inflammation stimulation can cause localized testicular congestion, edema, when involved in the epidermis of the scrotum, tingling when touching the phenomenon can occur. 2. Eczema: the scrotum is in a moist, hot environment, easy to trigger eczema, which can be manifested as pimple-like blisters, and when the blisters burst and become infected, it can lead to tingling when touching the epidermis of the scrotum. 3. Allergy: if the scrotum skin contact with chemical fiber fabrics and other allergenic substances, it will cause an inflammatory reaction and a tingling sensation in the skin.