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,
The first symptoms of shingles are unusual skin sensations. These include pain, itching and tingling. Other symptoms include confusion, fatigue, fever, headache, memory loss, an upset stomach and stomach pain. These symptoms generally occur one to five days before a painful rash appears on one side of the body or face.