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 all vaccines, the shingles vaccine can cause side effects, but they're generally mild and don't last long. Common side effects of the shingles vaccine, which occur in at least 1 in 10 people, are: 1  headache. 2  redness, pain, swelling, itching, warmth and bruising at the injection site.here is a very small chance of a severe allergic reaction (anaphylaxis) to the shingles vaccine, as there is with other vaccines. Anaphylaxis is very serious and potentially life-threatening, but it can be treated.