It seems that you are having lichen urticatus ..also called papular urticaria
It is hypersensitive reaction to insects bite...in your case tick bite
Take anti histaminics like levocetirizine
till itching is relieved.
If needed, you may take steroids for short period.
Apply calamine lotion on lesions to sooth Paracetamol
may be taken if you have fever.
I hope you got my answer.
Dr. Ilyas Patel MD