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.
Poor hydration and nutrition is another factor in the list of cracked lips causes. When the individual does not nourish the body properly, the skin and the lips will appear to be dry and dull. Nourishment of the skin is related to hydration and also the consumption of important vitamins and minerals.