Thanks for writing in.
The itching over hands can be due to contact dermatitis
Also I would like to know-
Do you have any visible lesions on hands?
Is there any vesicle or fluid filled lesion on hands?
Since when you have this?
Answer the questions and upload the photographs of your hands if there are any visible lesions over hands.
Till then you can take tablet zyrtec for itching and apply calamine lotion over hands.
Hope this helps.