Have Dark Brownish/red Dime-sized Spot. Developed Fever. Should I Be Worried?
Fever blisters
Detailed Answer:
Hi Mam,
I have gone through your query.
It suggests that you may be suffering from the fever blisters.
For your kind information, it (fever blisters) is mainly located on the lips, roof of the mouth, and face is usually caused by the highly contagious herpes simplex type 1 virus.
There is no cure for this only symptomatic treatment suffices. They subside within a week only with supportive treatment.
No need to so much worry for this. If the blister is particularly painful, applying a topical treatment such as lidocaine /Xylocain spray or benzyl alcohol on the area can help.
If you have any doubt, I will be available for your query.