Background: Acne vulgaris is a chronic skin disease caused due to blockage and/or inflammation of pilosebaceous units in which lesions present as non-inflammatory, inflammatory or mixture of both. The inflammatory type, often results in distressing scars for which dermaroller therapy and fractional CO2 laser have shown to be effective treatment modalities. Material and Methods: This is a prospective, descriptive and hospital based study. Total of 140 cases were enrolled in study carried out for 1 year in the Department of Dermatology at tertiary health centre and medical college with subsequent follow up of up to six months. Patients with acne scars under the groupings of a score > 3 points on Global Acne Scarring Classification Scale were enrolled. Results: Out of 140 patients, (70 -dermaroller group, 70 -CO2 laser group) completed treatment and follow-up. Dermaroller therap results indicated that the baseline was 23.43±6.32 and reduced to 13.23±3.65 after the treatment. This difference was found to be statistically highly significant with p value as <0.0001. On the other hand, the baseline and follow up after fractional CO2 laser therapy was evaluated and the results indicated that the mean objective score before treatment was 23.95±6.85 and after treatment, it was 16.34±4.75. This difference was statistically highly significant p value <0.0001. Conclusion:On comparing the efficacy of dermaroller therapy and fractional CO2 laser in the treatment of post-acne scars, both were found to be efficacious while fractional CO2 laser being more effective in treating severe acne scars than dermaroller therapy.

Introduction: Melasma is main cause of facial hyperchromia and has a significant psychosocial impact. Wood's lamp has been a useful device to estimate the depth of melanin determined by lightinduced fluorescence. A dermoscope enables a clear visualization of pigments distribution, and the color variation of melanin will depend on its location within the skin. Methods: A cross-sectional observational study was conducted at the outpatient section of the Department of Dermatology of a tertiary care teaching hospital. A total of 120 patients were enrolled for a duration of 1 year. Patients diagnosed to have melasma on clinical grounds were enrolled after considering various inclusion and exclusion criteria. Result: On clinical examination, 47 patients had centrofacial distribution and 73 had malar distribution of melisma. On Wood's lamp 51 patients showed complete enhancement hence classified as epidermal, 63 patients had no enhancement hence classified as dermal and 6 patients showed few areas of enhancement and hence classified as mixed melasma. On dermoscopy, 48 patients showed regular pigment network with a brownish homogeneous pigmentation hence classified as epidermal, 61 patients showed Irregular network with bluish grey pigmentation hence classified as dermal and 11 patients showed features of both epidermal and dermal and hence classified as mixed melasma. Conclusion:In the analysis of correlation between Dermoscopy and Wood's lamp in classification of Melasma, the results showed substantial discordance between the methods. Based on the principles of Dermoscopic examination, this method applicable, more appropriate and helpful for routine diagnosis, assessment and monitoring of patients with melasma.