Skin colored bump on you right hand may hyperkeratotic lesion or callocity.
As there is itching , it can be lichen simplex chronicus
It may be due to continuous contact with something.
Or friction with some object.
Or itchy plaque.. LSC .
You consult dermatologist
for perfect diagnosis.
By clinical examination he wil come to some coclusion.
He may prescribe keratolytic
oint with steroid cream.
And antihistaminics with short course of steroids
Avoid soap bath, you can use dettol liquid in bath.
I hope you got my answer.
Dr. Ilyas Patel MD