Etiological factor

Patients No.

%

Candidates are not suitable for the procedure

12

34.28%

Non-compliance with the (FDA) indication

9

25.7%

Filler injected in a wrong place

9

25.7%

Injection of a large quantity than required

18

51.4%

Frequent and long-term injection

5

14.2%

Non-trained hands

15

42.8%

Lack of scientific knowledge

17

48.5%

The use of (FDA) unapproved products

13

37.1%