A cold sore usually passes through several stages:  Tingling and itching. Many people feel itching, burning or tingling around the lips for a day or so before a small, hard, painful spot appears and blisters erupt. Blisters. Small fluid-filled blisters typically erupt along the border of your lips. Sometimes they appear around the nose or cheeks or inside the mouth. Oozing and crusting. The small blisters may merge and then burst, leaving shallow open sores that ooze and crust over.  Signs and symptoms vary, depending on whether this is your first outbreak or a recurrence. The first time you have a cold sore, symptoms may not start for up to 20 days after you were first exposed to the virus. The sores can last several days, and the blisters can take two to three weeks to heal completely. Recurrences typically appear at the same spot each time and tend to be less severe than the first outbreak. In a first-time outbreak, you also might experience:  Fever Painful gums Sore throat Headache Muscle aches Swollen lymph nodes  Children under 5 years old may have cold sores inside their mouths and the lesions are commonly mistaken for canker sores. Canker sores involve only the mucous membrane and aren't caused by the herpes simplex virus.
cold sore passes stages:  tingling itching  people feel itching  burning tingling lips day small  hard  painful spot blisters erupt  blisters  small fluid-filled blisters typically erupt border lips  nose cheeks inside mouth  oozing crusting  small blisters may merge burst  leaving shallow open sores ooze crust over   signs symptoms vary  depending first outbreak recurrence  first time cold sore  symptoms may start 20 days first exposed virus  sores can last days  blisters can take weeks heal completely  recurrences typically spot time tend severe first outbreak  first-time outbreak  experience:  fever painful gums sore throat headache muscle aches swollen lymph nodes  children 5 years old may cold sores inside mouths lesions commonly mistaken canker sores  canker sores involve only mucous membrane aren't caused herpes simplex virus
cold sore