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.
The main cause of neck pain is tension. During periods of intense anxiety, your muscles tense up dramatically. Muscle tension tightens the muscles, especially in the shoulders, back, and neck. The more anxiety you experience, the more your tension may cause significant pain and discomfort. A related issue comes from the mindset of those with anxiety. Many people get muscle tension in their neck during times of stress.
A sharp throbbing pain in your neck which radiates downwards to your arms might signify a neck cramp. There are various causes of neck cramps as we as treatment options. Advertisement. To maintain our posture, the muscles of our neck and head alternatively contract and expand.leeping on the side, by tucking your body in the fetal position, causes the neck muscles to be over-flexed resulting in cramps in neck. Bad Posture. Bad posture is an unfortunate by-product of our sedentary lifestyle. Bad posture causes cramps and inflexibility in the body.