Making the world better, one answer at a time. Angel Dust is one of the street names of Phencyclidine, or PCP. It is a drug formerly used as an anesthetic agent, exhibitinghallucinogenic and neurotoxic effects.
A blow to the rib cage can cause either a fracture or bruising to the membrane that covers the bone (periosteum). Both can be very painful, and it is very often hard to distinguish the difference, even with a X-ray.
Costochondritis is inflammation of the junctions where the upper ribs join the costal cartilage that attaches them to the breastbone (sternum). Costochondritis causes localized chest wall pain and tenderness that can be reproduced by pushing on the involved cartilage in the front of the rib cage. Costochondritis is a relatively harmless musculoskeletal chest pain and usually resolves without treatment. The cause is usually unknown.