On 15 September 2010, test pilot Kevin Bredenbeck achieved Sikorsky's design goal for the X2 when he flew it at a speed of 250 knots (290 mph; 460 km/h) in level flight,   an unofficial speed record for a helicopter.   The demonstrator then reached a new record speed of 260 knots (300 mph; 480 km/h) in a shallow 2˚ to 3˚ dive,  which was just short of the 303 mph achieved by the Sikorsky S-69 technology demonstrator helicopter.  Sikorsky states that the X2 has the same noise level at 200 knots that a regular helicopter has at 100 knots. Above 200 knots, the rotor speed is reduced from 446 to 360 RPM   to keep tip speed below Mach , the rotor disc is slightly nose-up, and the lift-to-drag ratio is about twice that of a conventional helicopter. Hands-off flying was also successfully performed during flight tests. 
Two possibilities to mention:
1. If your skin is tender to touch and burning is not affected by body movements and different positions, then it can be shingles (Herpes zoster virus reactivation in one of the spinal nerves). Nausea can be also from shingles. This causes burning pain going like a stripe from the spine to the front. Often (but not always) rash appears after some time. Neurologist would tell you, if there is any available painkiler for your situation.
2. Bulging or herniated disc or some other disorder in your thoracic spine (osteoporosis, arthritis..) could cause pinched spinal nerve. This type of pain would be affected by different body positions and would not be tender to the slight touch. Again, neurologist could say more.
After more than a year of trash talk and speculation, Floyd Mayweather and Conor McGregor are finally set to fight in a boxing match that will take place on August 26 in Las Vegas. The pay-per-view event will begin at 7:00 PM EST. Odds for the fight were set long before it became official, with Mayweather opening as a gigantic favorite at -2250 and McGregor at +950. Since the opening betting odds were released, an avalanche of public money has come in on McGregor, causing a dramatic shift in the odds. The day after the fight became official, Mayweather’s odds shrunk all the way down to -600, while McGregor’s value has been chopped down to +400.