Table 2 Main clinical characteristics of HSP in groups A and B at inclusion

Cutaneous involvement

30 (100)

30(100)

Palpable purpura

30

30

Necrotic lesions

6

7

Edema of the extremities

21

22

Abdominal involvement

19 (63)

22 (73)

Abdominal pain

19

21

Vomiting

8

12

Diarrhea

3

2

Anorexia

8

14

Gastrointestinal bleeding

2

4

Others

1

8

Articular involvement

27 (90)

30 (100)

Arthralgias

20

0

Arthritis

4

4

Periarticular edema

21

18

Muscle pain

9

8

Renal involvement

Proteinuria ≥ 1 + and/or hematuria ≥ 2 + 

13 (45)^a

13 (43)

Lower back pain

1

1

Edema

4

9

High blood pressure

1

5

Macroscopic hematuria

2

6

Genital involvement

Orchitis

5 (33)^b

3 (20)^b