Tiny itchy spots appearing on the back of both hands

Hi guys,

Every year around this time of the year (spring) i seem to get these tiny itchy spots at the back of my hands. By summer the spots seem to disappear. Does anyone else have this? Does anyone know what it is?

please help!!!
I take anti-histamine to reduce itchiness and apply creams to help. But i want to know if anyone knows what this is??