Aims:The aim was to study the trichoscopy features of selected hair and scalp conditions by two dermoscopic devices with different modes that is, polarized (noncontact) and nonpolarized (contact) mode.Materials And Methods:The present study included 11 clinical varieties of cases with total 112 patients, attending Sir Takhtasinh Hospital, Bhavnagar in the last 2 years. The clinical history was recorded for each case, and images were taken in both the Heine and DermLite II pro dermatoscope. We used polarized mode of the noncontact device (DermLite II) and the nonpolarized mode of the contact device (Heine) for our study.Statistical Analysis Used:Fisher's exact test to study dermoscopic observations for each mode.Results:We observed different nonscarring alopecia cases such as alopecia areata, androgenetic alopecia, trichotillomania, and tinea capitis. Scarring alopecia included discoid lupus erythematosus, lichen planopilaris, pseudopelade of Brocq, systemic lupus erythematosus. Scaling disorders included the psoriasis and seborrheic dermatitis. Furthermore, infestations like pediculosis capitis were included in the study. Various features were divided into follicular, interfollicular, pigmentary, vascular and hair shaft patterns. Each of the features was correlated in both the Heine (nonpolarized) and DermLite II (polarized) dermoscope, and observational finding was put forward accordingly.Conclusions:Various variations were observed in the documentation of dermoscopic patterns of the two dermatoscopes with certain features such as vascular patterns, scaling, and reticular pigmentation being better appreciated in polarized mode, while certain features were better documented in nonpolarized mode that is, black dots and tapered hair.

Skin properties vary with age, gender, and location on the body. This knowledge will help to create a database of these parameters in the Indian population. It would assist in the diagnosis of various clinical conditions and monitor therapeutic response.

Context: Lichenoid interface dermatitis refers to the histological pattern which is useful for the classification and diagnosis of disorders of a particular group in dermatology with peculiar features.Aims: To get clinico pathological correlation in lichenoid interface dermatitis which will help in accurate diagnosis by analyzing history, clinical examination as well as histological details of nature and extent of epidermal, interface and dermal changes and the distribution of various inflammatory cell infiltrates.Methods: After appropriate case selection according to the inclusion criteria, the biopsy was taken and sent for histopathological analysis. It was reviewed and correlation was done in each patient.Statistical analysis used: kappa correlation analysis. Results: Out of total 117 cases, 108 were of lichen planus, five were of lichen striatus, two of lichenoid drug eruptions and two of lichen nitidus. Clinico-pathological correlation was present in 70.94% of cases of lichenoid interface dermatitis. Correlation was seen in 100% cases of lichen striatus, and 78% cases of lichen planus.Conclusions: The most consistent findings in histology in our study were basement membrane degeneration, band like lymphocytic infiltrates and melanin incontinence. Other findings such as hypergranulosis, civatte bodies were not observed frequently.

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