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,
Early symptoms of shingles include: 1  Pain that is itching, stabbing, or shooting. 2  Tingling feeling in or under the skin, which is red in the affected area.nderstanding Postherpetic Neuralgia -- Symptoms. Neuralgia occurs in one part of your body, typically on one side. The condition follows the area that was affected by shingles along the distribution of a specific nerve.