Itchy Palm .... PS pic added.

It's been 4 days since I got this itchiness and bumps on my right palm ....I don't know why im having this...it gets annoyingly itchy at night ..can anyone tell me what that is ?

Can I see some white lumps on the surface?  It looks like urticaria or hives. Have you been handling something unusual? A plant, for example?  It gets worse at night because you are warm. It should gradually clear as long as you dont handle any more of the allergen,whatever it may be. You need to identify that first.

Thank u for ur help... for helping me to get an idea of what it is