Thanks for writing in.
The symptoms that you have described are suggestive of a poisonous insect,tick or bug bite
. This needs to be treated with the following:
a. You would need a course of oral antibiotics
to prevent and treat the superadded infection (if any)
b. Dressing the wound would be required
c. Analgesics would help with the pain
The red streak in the arm suggests that an inflammation of the lymphatics. I would suggest you see a physician for the same.
Hope this helps