الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Dermoscopy is an aiding diagnostic tool that allows the in vivo
evaluation of colors and microstructures of the epidermis, the dermoepidermal junction, and the papillary dermis which are not visible to
the naked eye. Its idea depends on trans-illumination of a lesion and
studying it with a high magnification.
Old dermoscopes required application of certain oil over the lesion to be examined while new dermoscopes are provided with polarized light to cancel out reflections from the stratum corneum. Polarized light dermoscopes may have a contact or noncontact lens. Devices that combine contact and noncontact attributes (hybrid dermoscopes) also are available. Dermoscopes are classified into dermoscopes without image capturing facility, dermoscopes with
image capturing facility and dermoscopes with image capture facility
and analytical capability.
Dermoscopes are used mainly for the study of melanocytic nevi
and melanoma and to differentiate them from other pigmented lesions.
However, wide and variable spectrum of traditional and newer applications
of dermoscopy demonstrated that its useful in a wide variety of cutaneous
disorders, including ectoparasitic infestations, cutaneous/mucosal infections,
hair and nail abnormalities, psoriasis, and other dermatologic as well as
cosmetologic conditions.
Depending on the skin disorder, dermatoscopy may be useful for differential diagnosis, prognostic evaluation, and monitoring response to treatment. Nowadays, it represents an important and relatively simple aid in daily clinical practice in assessing dermoscopic structures which may be visualized by trichoscopy.
In this study, dermoscopy used in clinical diagnosis of different types of bullous diseases. The following features were significantly the most frequent features among all types of bullous disease . Yellow hemorrhagic crusts presented among 93.8% of studied cases, followed by pink areas which presented in 71.9%, followed by dark brown discoloration 56.2%, then 53.1 of patients presented with extravasations and white polygonal structures.
CONCLUSION
We suggest that a polarized-light handheld dermaoscope attached to a
digital camera provides a practical and useful aid for the clinical diagnosis and prognosis of different types of Bullous diseases. Immunological examinations are the gold standard for diagnosing bullous diseases, but dermoscopy may serve as a non-time consuming technique that may facilitate the initial diagnosis and help choosing an optimal site to obtain a biopsy specimen.
Moreover, it has low cost and technical practicality when compared to the videodermoscope. Furthermore, it spares the patients invasive diagnostic methods.Yellow hemorrhagic crusts, pink areas, dark brown discoloration, extravasations and white polygonal structures were the most frequent dermoscopic findings in lesions of patients with bullous diseases.