Pyogenic arthritis, pyoderma gangrenosum, and acne syndrome in a Chinese family: A case report and review of literature

Figure 2 Characteristics of clinical manifestations in pyogenic arthritis, pyoderma gangrenosum, and acne syndrome (data were collected from 52 cases who had detailed description of symptoms). A: The Venn diagram for the three typical symptoms. Each circle represents a symptom, the area of coincidence represents cases with two or three symptoms; B: The sector diagram for the age of each symptom onset. Pyogenic arthritis always appears in childhood. Skin lesions are more likely to appear from adolescence to adulthood; C: The histogram for the affecting areas of each symptom. Arthritis mainly affects occurs in knee joints, elbow joints, ankle joints, hip joints, and other large joints. Acne always appears on the face and back. Pyogenic granuloma often occurs on the extremities and the back.