Hematemesis is the vomiting of blood, which may be obviously red or have an appearance similar to coffee grounds. Melena is the passage of black, tarry stools. Hematochezia is the passage of fresh blood per anus, usually in or with stools.
Opioid medications are prescribed to alleviate pain and suffering, but their abuse and misuse is killing more than Americans every year. Prescription painkiller abuse is a problem of epidemic proportions and a significant national public.