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 can start several days before the more obvious symptoms of shingles. The most common early symptom is a feeling of numbness, itching, tingling or a burning pain centered in one part of the body or face. Often, this occurs in the abdominal area. The pain can worsen as the case of shingles develops. For some, the pain can be sharp, stabbing, and intense. It may cause hypersensitivity.