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.
Although neck tension can influence the magnitude of tightness in the ears, it is not shown to be the cause of it. Another theory states that what happens when the neck and shoulders become tense they block the passages in the ear. This then causes the fluid in the ears to build up and they are unable to drain properly.ften muscles and nerves work hand in hand, therefore if you have any tension knots on your neck or shoulders this can aggravate blood flow. It can also lead to discomfort and extra tension in the neck and shoulders. Resource: Plugged Ears/Clogged Ears.