There are many causes for itching:Probably the most common cause of itch is psychological, that is, due to stress, anxiety, etc. Stress
also can aggravate itch from other causes. Dry skin is another frequent cause of itch. Many people
also report sunburn itch following prolonged exposure to UV radiation from the sun
Anti-itch creams and lotions: camphor,

menthol,

phenol,

pramoxine,

diphenhydramine, and

Benzocaine (or one of the other "caine" anesthetics).
You can apply these products over and over -- every few minutes if needed.