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.
There can be different causes of chapped lips. It can range from things such as the weather to a vitamin deficiency. The following are considered to be the more common causes for chapped lips. 1  Weather â The elements can cause of lips to dry out. 2  The winter can cause chapped lips because of its strong winds and cool temperature. 3  The summer can also affect our lips since too much exposure to the sun can make your lips chapped.