Homeless crack cocaine users: Territories and territorialities in the constitution of social support networks for health.

Homeless crack users are an important segment of the population living in extreme vulnerability in Brazil. In 2011, the Consultório na Rua - CnaR (Street Clinic) was created, to improve access to health care for this population. Considering building up social support networks as a strategy to face life's difficulties, this study aims to analyse how crack users, in Rio de Janeiro, relate to territory and build social support networks to deal with their everyday life challenges and health needs.