The definition of a trajectory is the curved path something takes as it moves through space. An example of trajectory is the path taken by a paper airplane as it flies through the air. trajectory. pl. trajectory.
Lip blisters are caused by herpes simplex virus HSV-1. It may occur due to emotional stress or trauma on the lips or due to prolonged exposure to sunlight. Sometimes it may infect your eyes, fingers and even genitals. Symptoms : Fever, nausea, vomiting, headache are some of the common symptoms of lip blisters. You may have painful sores on the lips and inside the oral cavity. The area may develop inflammation and you will have difficulty to eat and drink. Sometimes, there may be sore throat.
Here are just a few of the telltale signs this blister type on your mouth is something more than a cold sore: 1  You have what seems to be a cold sore that doesnât heal in two weeks or less. 2  Your lips have an area that appears to be eroded. 3  Lumps, bumps or thickening areas on the lips. 4  A lip sore thatâs crusty and bleeds.