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.
Cramps and Neck Cramps A cramp is a painful, unpleasant sensation that is caused due to the contraction of muscles. They can be caused due to cold, overexertion, and illness or poisoning. There are... Cramps and Neck Cramps. A cramp is a painful, unpleasant sensation that is caused due to the contraction of muscles.They can be caused due to cold, overexertion, and illness or poisoning. There are two main causes of cramp â inadequate oygenation of the muscles and the lack of water or salt.here may be temporary pains or permanent neck injuries. Neck cramps may be caused by the abnormalities in the muscles, ligaments and nerves in the neck area and also the bones and joints of the spine. These abnormalities happen due to wear and tear, injuries and tumors in some cases.