Active and Passive Immunity. Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response. Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen.
Lower back tightness can cause muscle twitching, pain and reduced range of motion. Lower back muscle tightness is the cause of a muscle spasm. This can be brought on by a strain, overuse or muscle weakness, according to BetterMedicine.com.
Moreover, tight muscles are also more susceptible to being strained and damaged, which can also cause short-term and chronic back pain, soreness, tenderness, and even immobility. Any muscle or group of muscles can be affected, including the muscles and groups of muscles in the upper, mid, and lower back. Any muscle or group of muscles are susceptible to anxiety and stress caused tension and pain. Once the muscles are strained, they can spasm and âlock up,â which can cause even greater pain and immobility, such as that commonly associated with chronic back pain. Many hospital and doctor visits are a result of chronic back pain due to stress, including the stress that anxiety causes. Many people are surprised to learn just how painful anxiety and stress-caused tight muscles can be, especially with chronic back pain.