Glossary

symptom – a sign of illness.

standard deviation (SD) – the standard deviation from a mean average, is a measure of the degree of variation from the mean.

thrombocytopenia – a low platelet count (platelets help stop bleeding by clotting blood).

buprenorphine – strong pain-killer useful for treating heroin addiction. See also methadone.

HPV (human papillomavirus) – a family of viruses associated with cervical cancer and anal cancer and genital warts.