The sympathetic system is responsible for the 'flight or fight' response (increased heartbeat, sense of excitement, nervousness, anxiety). The parasympathetic system is responsible for the opposite-where youre in a calm and relaxed mode.he sympathetic system is responsible for the 'flight or fight' response (increased heartbeat, sense of excitement, nervousness, anxiety). The parasympathetic system is responsible for the opposite-where youre in a calm and relaxed mode.
1 Older adults and individuals with a weakened immune system are at greatest risk for developing shingles. 2  Shingles symptoms and signs include. 3  one-sided stabbing pain, 4  tingling, itching, burning, stinging sensation that precedes the appearance of the rash by a few days, 5  headache, 6  fever and chills, 7  nausea, 8  body aches,
Like every vaccine, Shingrix has the potential for side effects, although so far, none seem particularly worrying. The new shingles vaccine does appear more likely to cause pain during injection and at the site of injection for up to three days afterward than Zostavax does. In clinical trials, the side effects also included injection site redness and swelling, muscle pain, and immune system responses such as headache, shivering, fever, and upset stomach.