Background: Acne vulgaris, is a chronic inflammatory disease of the pilosebaceous units. Genetic, environmental factors and nutrition influence on this disease. Recent studies indicate an essential role of nutrition in the development of acne, particularly with the effect on oxidative stress and inflammatory processes. Many studies have reported lower incidence of acne in individuals who receive diets containing large amounts of omega-3. The aim of this study was to determine the probable therapeutic effects of omega-3 for the treatment of acne.

Materials and Methods: In this study, 60 patients with moderate to severe facial acne were randomly divided into two treatment groups: 1) 100 mg doxycycline daily and one placebo capsule Omega -3 2) doxycycline 100 mg daily and one capsule 1000 mg Omega -3. Acne severity was determined based on GAGS system at the beginning of treatment and at the end of the sixth and twelfth weeks of treatment, with photographs obtained from each patient.

Results: There was a significant reduction in acne severity score (GAGS) at the end of sixth and twelfth weeks in the Omega-3 group in comparison to control group that received placebo.

Conclusion: Omega-3 fatty acids can improve moderate to severe inflammatory acne, probably due to their anti-inflammatory properties.

Background: Demodex mites can infect the sebaceous glands and hair follicles from almost every area of human skin especially on the face. Demodicosis is considered to be a factor in the pathogenesis of some skin disorders. The aim of this study was to determine the prevalence of Demodex mites and to identify the association between risk factors and Demodex infection.

Materials and Methods: This cross-sectional study was conducted with 100 university students in Khorramabad, Iran. Samples were collected from three different regions of the face (nose, cheeks and forehead) using two different methods, including cellophane tape method (CTP) and skin pressurization. A questionnaire was filled for each individual and data were subjected to statistical analyses using chi-square test.

Results: The overall prevalence of Demodex mites was 55%. The detection rate of infection by cellophane tape method was much higher than that of the skin pressurization (p<0.01). The incidence of Demodex was found to occur more frequently in males and in people with oily skin (p<0.05). Furthermore, the infection rate among students with acne vulgaris was significantly higher than that of students without acne (p<0.05). We found a significant difference between acne vulgaris and density of Demodex mites (p<0.01).

Conclusion: The cellophane tape method (CTP) is an easy and suitable method for epidemiologic investigations. Skin types and gender were identified as risk factors. Our study suggests that Demodex infection could be associated with acne vulgaris.

BACKGROUND: Acne vulgaris is chronic  inflamatory disease  of the pilosebaceous unit.Patients  experience  psychological  burdens like depression ,anxiety , and low self-esteem. Isotretinoin  is used in the treatment of  severe ,recalcitrant acne ;however,treatment  commonly results in associated   with  a  number  of  adverse effects that treatment stopped  consequent  this side effects. The aim of this study is to evaluate  the effect of oral  omega 3 on  side-effects of  isotretinoin .

METHODS:One  hundred eighteen  patients with sever acne vulgaris  were  randomized to two groups. Control group recived  isotretinoin (0.5 mg∕kg) alone and case  group received  isotretinoin (0.5 mg∕kg)  combined  with omega 3 (2 capsuls) daily.the treatment duration was 16 weeks.Mucocutaneous  side-effects  were assessed(4,8,12,16th wk).

RESULTS:Lip  dryness (4,8,12th wk)  and  dryness of nose, skin ,eye  in the 4 th week in the patients treated with isotretinoin and omega3 was lesser than in the patients treated with isotretinoin  (P value < 0.001).

CONCLUSION:Omega 3 decreased  the  mucocutaneous side effects in the patients  with acne   vulgaris   who received  isotretinoin.