It seems that you may be having viral exanthem
The rash is itchy and your friend is also developing.
It is caused by virus.
It may be fifth disease
..also called erythema infectiosum
It is caused by parvovirus
It self limiting.
And requires no treatment.
Symptomatic treatment may be taken.
If there is itching, anti histaminics may be taken.
So, you do not worry.
You may be alright in few weeks.
I hope you got my answer.
Dr. Ilyas Patel MD