Plumbum Metallicum plb.

Distinct blue line along margins of gums. Violent colic; abdomen retracted to the spine, as if drawn in by a string. Excruciating pains in the umbilical region, to other portions of the abdomen and body, somewhat relieved by pressure. Constipation; stools scanty, hard, in lumps, or balls like sheep's dung, black or green colour, passed with difficulty. Sharp, lightning-like neuralgic pains in lower limbs, mostly from hips to knees, occurring in paroxysms, more from movement.