Other kinds

From dermoscopedia

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 Editor: Luc Thomas

 Author(s): Luc Thomas     ·  Amélie Boespflug
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Author(s) Luc Thomas · Amélie Boespflug
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Status update June 25, 2018
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Drug-induced pigmentation

Many drugs can induce pigmentation of the nail plate, among them hydroxyurea, bleomycin and minocycline, with azidothymidine (AZT) being the most common. Dermoscopic features are very similar to those observed in lentiginoses with polydactylic gray longitudinal bands.

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Alopecia Areata

Alopecia areata is an autoimmune disorder characterized by transient, non-scarring hair loss and preservation of the hair follicle[1]. Alopecia areata can be associated to trachyonychia, where the nail plate shows multiple fine and superficialThis glossary term has not yet been described. longitudinal fissures covered by thin scales[2]. . In the “shiny” variety of trachyonychia, the nail shows superficial ridging and a myriad of small geometrical pits.

Alopecia Arata -clinical.jpg Alopecia Areata -dermoscopy.jpg Alopecia Areata -dermoscopy 2.jpg



Lichen planusThis glossary term has not yet been described.

Lichen planus can affect the nailsThis glossary term has not yet been described. and it is usually polydactyle. NailsThis glossary term has not yet been described. are thinned and show longitudinal ridging and fissuring with distal splitting. DermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. shows multiple deep longitudinal fissures reaching the distal part of the nail as well as partial absence of the nail plate[3]. A nail biopsy is mandatory to confirm the diagnosisis the identification of the nature and cause of a certain phenomenon. Diagnosis is used in many different disciplines with variations in the use of logic, analytics, and experience to determine "cause and effect". In systems engineering and computer science, it is typically used to determine the causes of symptoms, mitigations, and solutions. Dermoscopy can be useful to follow up and evaluate response to treatment.

Lichen planus.jpg Lichen planus dermoscopic.jpg



PsoriasisThis glossary term has not yet been described.

Nail psoriasisThis glossary term has not yet been described. is regularly associated with skin psoriasis. Pits, a punctated nail plate depressions covered by large scales and onycholysis with salmon borders is often visualised dermoscopically.

Psoriasis.jpg

Psoriasis -dermoscopy.jpg
  1. Alopecia areata C. Herbert Pratt, Lloyd E. King, Jr., Andrew G. Messenger, Angela M. Christiano, John P. Sundberg Nat Rev Dis Primers. Author manuscript; available in PMC 2017 Aug 28. Published in final edited form as: Nat Rev Dis Primers. 2017 Mar 16; 3: 17011. Published online 2017 Mar 16.
  2. Dermoscopy in the Evaluation of Nail Disorders Aurora Alessandrini, Michela Starace, Bianca Maria Piraccini Skin Appendage Disord. 2017 May; 3(2): 70–82. Published online 2017 Mar 8. doi: 10.1159/000458728
  3. Dermoscopy in the Evaluation of Nail Disorders Aurora Alessandrini, Michela Starace, Bianca Maria Piraccini Skin Appendage Disord. 2017 May; 3(2): 70–82. Published online 2017 Mar 8. doi: 10.1159/000458728