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.
Tension or Stress. Tension and stress can cause a tightening of the trapezius muscle, causing soreness and pain. Women perceive life to be more stressful and suffer more from neck pain than men, according to a 2010 study at the University of Gothenburg.hiplash. Traumatic injury such as whiplash can cause a sore trapezius muscle. During an accident or injury the head is snapped backwards and then forwards, straining the trapezius muscles and causing neck pain, according to the MayoClinic.com. Whiplash can be caused by auto accidents, physical abuse or contact sports.