Final answer:
The red marks on Mrs. Johnson's torso are symptoms, which are subjective experiences felt by the patient. It is important to seek further medical assessment to determine the likely cause.
Step-by-step explanation:
The term that refers to the red streaks seen on Mrs. Johnson's torso is symptoms. Symptoms are subjective experiences felt or experienced by the patient, but they cannot be clinically confirmed or objectively measured. They include signs such as raised, red marks on the skin. The likely cause of this condition would require further medical assessment and cannot be determined without more information.