When treating diabetic foot ulcers, there is limited evidence from a small number of trials that the use of different hydrocolloid dressings compared with other types of dressing (basic wound contact, foam, alginate, or iodine-impregnated dressing) provides no statistically significant difference in the number of diabetic ulcers healed. There is no comparative quantitative data available regarding the difference between hydrocolloid dressing and other types of dressing in improving health related quality of life or ulcer recurrence or  in reducing adverse effects.