Which of the following conditions is a systemic contraindication for massage/body work?

The choice of scabies as the systemic contraindication for massage or bodywork is based on the nature of the condition and its potential to be contagious. Scabies is caused by a mite that infests the skin, resulting in intense itching and a rash. Since it is highly contagious, engaging in massage therapy with a client affected by scabies poses a risk of transmission not only to the therapist but also to other clients and personnel in the facility. Therefore, treating a person with scabies is contraindicated until the infestation is properly treated.

In contrast, the other conditions listed—muscle strain, sprained ankle, and common cold—are generally localized or have clearer treatment protocols that do not inherently pose a risk to others. Muscle strains and sprains are musculoskeletal issues that can often benefit from appropriate massage techniques, while a common cold, although it can be uncomfortable for the client, is typically not deemed a systemic contraindication for massage as long as hygiene practices are observed, and the client is capable of receiving treatment.