Noninvasive in vivo imaging techniques have become an important diagnostic aid for dermatology. Dermoscopy, also known as dermatoscopy, has been shown to increase the clinician's diagnostic accuracy when evaluatin...Noninvasive in vivo imaging techniques have become an important diagnostic aid for dermatology. Dermoscopy, also known as dermatoscopy, has been shown to increase the clinician's diagnostic accuracy when evaluating cutaneous neoplasms. Dermoscope, both hand-held and videodermoscope, are nowadays a basic instrument for almost all the dermatologists around the world. Trichoscopy is the term coined for dermoscopic imaging of the scalp and hair. Routinely using dermoscopy and recognizing the structures and patterns of the different types of alopecia will likely improve the observer's sensitivity for diagnosis and followup of hair and scalp disorders. Structures which may be visualized by trichoscopy include hair shafts of different types, the number of hairs in one pilosebaceous unit, hair follicle openings(dots), the peri and interfollicular areas and the vasculature. This review summarizes the current knowledge about trichoscopic findings which may aid in the diagnosis of alopecia. Besides diagnosing alopecia, it has the potential for obviating unnecessary biopsies and when a biopsy is still needed it is helpful in choosing an ideal biopsy site. Moreover, trichoscopy can be a valuable tool for evaluating the treatment response photographically at each follow-up. Finally, we have discussed the utility of dermoscopy in inflammatory scalp disorders and infections.展开更多
Dear Editor:Recently,Ye et al.1 investigated artificially induced damage to the skin barrier,reporting distinct qualitative dermatoscopic findings at different stages of skin breakdown.They coined and/or modified seve...Dear Editor:Recently,Ye et al.1 investigated artificially induced damage to the skin barrier,reporting distinct qualitative dermatoscopic findings at different stages of skin breakdown.They coined and/or modified several descriptive terms in their report.The early stage was characterized by“branching vessels on a pinkish-reddish background”and the next stage by“keratins on whitish or yellowish-orange patches,”dark pigmented spots,and“blurry”or“dotted”vessels.The late stage was marked by dermatoglyphics,invisible vessels,and scattered pigmented spots.1 Despite their promising findings,little is known about the dermatoscopic characteristics of natural disease models.展开更多
文摘Noninvasive in vivo imaging techniques have become an important diagnostic aid for dermatology. Dermoscopy, also known as dermatoscopy, has been shown to increase the clinician's diagnostic accuracy when evaluating cutaneous neoplasms. Dermoscope, both hand-held and videodermoscope, are nowadays a basic instrument for almost all the dermatologists around the world. Trichoscopy is the term coined for dermoscopic imaging of the scalp and hair. Routinely using dermoscopy and recognizing the structures and patterns of the different types of alopecia will likely improve the observer's sensitivity for diagnosis and followup of hair and scalp disorders. Structures which may be visualized by trichoscopy include hair shafts of different types, the number of hairs in one pilosebaceous unit, hair follicle openings(dots), the peri and interfollicular areas and the vasculature. This review summarizes the current knowledge about trichoscopic findings which may aid in the diagnosis of alopecia. Besides diagnosing alopecia, it has the potential for obviating unnecessary biopsies and when a biopsy is still needed it is helpful in choosing an ideal biopsy site. Moreover, trichoscopy can be a valuable tool for evaluating the treatment response photographically at each follow-up. Finally, we have discussed the utility of dermoscopy in inflammatory scalp disorders and infections.
文摘Dear Editor:Recently,Ye et al.1 investigated artificially induced damage to the skin barrier,reporting distinct qualitative dermatoscopic findings at different stages of skin breakdown.They coined and/or modified several descriptive terms in their report.The early stage was characterized by“branching vessels on a pinkish-reddish background”and the next stage by“keratins on whitish or yellowish-orange patches,”dark pigmented spots,and“blurry”or“dotted”vessels.The late stage was marked by dermatoglyphics,invisible vessels,and scattered pigmented spots.1 Despite their promising findings,little is known about the dermatoscopic characteristics of natural disease models.
