hi..thanks for your query.
From the pattern of eruptions you describe,i feel you have Herpes Labialis. This is an infection of the lips, mouth, or gums due to the herpes simplex
virus. It causes small, painful blisters
commonly called cold sores or fever blisters.They usually appear within 1-3 weeks after you come into contact with the virus.
symptoms preceding eruptions include:Itching,burning or tingling of the lips or skin around mouth.
Symptoms may go away on their own without treatment in 1 to 2 weeks.Antiviral
medicine can be prescribed. It can help reduce pain and make your symptoms go away sooner. Medicines used to treat mouth sores include:Acyclovir
,Valacyclovir.These medicines work best if you take them when you have warning signs of a mouth sore, before any blisters develop.
hope this helps..take care!