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.
A rupture of the spleen can cause irritation beneath the rib cage and it will also cause the top portion of the left shoulder to ache. Damage to the membranous covering of a lung can cause it to collapse, leaking air to the space between rib cage and lungs, which will cause pain in the rib areas.