IADVL
Indexed with PubMed and Science Citation Index (E) 
 
Users online: 2698 
     Home | Feedback | Login 
About Current Issue Archive Ahead of print Search Instructions Online Submission Subscribe What's New Contact  
  Navigate here 
  Search
 
   Next article
   Previous article 
   Table of Contents
  
 Resource links
   Similar in PUBMED
    Search Pubmed for
    Search in Google Scholar for
  Related articles
   [PDF Not available] *
   Citation Manager
   Access Statistics
   Reader Comments
   Email Alert *
   Add to My List *
* Registration required (free)  

 
  In this article
   Abstract
   Introduction
   Materials and Me...
   Results
   Discussion
   References
   Article Figures
   Article Tables

 Article Access Statistics
    Viewed3952    
    Printed57    
    Emailed3    
    PDF Downloaded0    
    Comments [Add]    

Recommend this journal

 


 
STUDIES
Year : 1997  |  Volume : 63  |  Issue : 2  |  Page : 99-100

Frictional pigmentary dermatoses : a clinical and histopathological study of 27 cases




Correspondence Address:
V G Prabhakara


Login to access the Email id

Source of Support: None, Conflict of Interest: None


PMID: 20944285

Rights and PermissionsRights and Permissions

  Abstract 

Twenty seven patients presenting with the complaint of pigmentary changes following friction were studied. Sixteen patients showed only pigmentary changes and 11 patients showed the presence of amyloid.


Keywords: Amyloid, Friction, Melanosis


How to cite this article:
Prabhakara V G, Chandra S, Krupa DS. Frictional pigmentary dermatoses : a clinical and histopathological study of 27 cases. Indian J Dermatol Venereol Leprol 1997;63:99-100

How to cite this URL:
Prabhakara V G, Chandra S, Krupa DS. Frictional pigmentary dermatoses : a clinical and histopathological study of 27 cases. Indian J Dermatol Venereol Leprol [serial online] 1997 [cited 2019 Apr 25];63:99-100. Available from: http://www.ijdvl.com/text.asp?1997/63/2/99/4528



  Introduction Top


Pigmentary change is a common presenting complaint in daily practice. Some of the patients present with pigmentary changes following friction, commonly over the upper limbs, trunk and the legs. It is usually difficult to make accurate diagnosis clinically. Hence, this study was conducted to elucidate accurate diagnosis and to differentiate between confusing terminologies like frictional melanosis, frictional amyloidosis, idiopathic amyloidosis and macular pigmentation due to other causes.


  Materials and Methods Top


Twenty seven patients presenting with the complaint of pigmentary changes following friction were studied. No other selection criteria were used. Complete relevant history was taken and all the patients were thoroughly examined. All of them underwent routine blood, urine and stool examinations. Histopathological examination of a haematoxylin and eosin stained section and another section stained with Congo red was carried out on all patients.


  Results Top


[Table - 1]shows characteristics of the patients included in the study. There was no correlation between the development of either pigmentation or amyloid to the material used for applying friction. However, there was direct correlation between the duration of friction and the development of pigmentation/ amyloid. Males were affected more.

All patients had multiple, irregular, ill-defined, pigmented, non-scaly, macular patches over the clavicles, thyroid cartilage, acromion, vertebral spines, scapular and suprascapular areas, elbow and epicondyles, ulnar styloid, and ulnar aspect of the forearms. In a few patients lateral aspect of distal l/3rd of the thigh was involved.

Histopathology showed mild hyperkeratosis, acanthosis and increase in the melanin in the basal and suprabasal cells. Incontinence of the melanin pigment, melanophages and perivascular lymphohistiocytic infiltrate were found commonly in the upper dermis. Special staining for amyloid using Congo red showed the presence of amyloid in 11 patients.


  Discussion Top


Frictional melanosis and frictional amyloidosis have been observed earlier.[1][3] Hidano et al have claimed that frictional melanosis is unique and should be differentiated from pigmentary disorder and macular amyloidosis.[2] In 1991, Iwasaki et al reported a case of biphasic amyloidosis arising from frictional melanosis.[4]

Our main idea for conducting the study was to avoid confusion while differentiating frictional melanosis, frictional amyloid, idiopathic amyloidosis and other causes of pigmentation. Our appreach towards this goal is given is [Table - 2] If a patient with only pigmentary changes and no amyloid at the time of presentation subsequently shows the presence of amyloid, his place in the classification changes accordingly. Our observation is that if the friction is stopped completely, frictional melanosis tends to disappear over a period of 3-5 years, whereas frictional amyloidosis is less likely to do so. We hope our readers will find our approach interesting[Figure - 1][Figure - 2].

 
  References Top

1.Hata S, Tanigaki T, Misaki K, et al. Incidence of frictional melanosis in young Japanese women induced by using nylon towels and brushes. J Dermatol 1987;14:437-9.  Back to cited text no. 1    
2.Hidano A, Mizuguchi M, Higaki Y, et al. Friction melanosis. Ann Dermatol Venereol 1984;111:1063-71.  Back to cited text no. 2    
3.Chu-Kwan-Wang, Chrang-Shi Lin. Friction amyloidosis. Int J Dermatol 1988;27:302-7.  Back to cited text no. 3    
4.Iwasaki K, Mihara M, Nishiura S, et al. Biphasic amyloidosis arising from friction melanosis. J Dermatol 1991;18:86-91.  Back to cited text no. 4  [PUBMED]  


    Figures

[Figure - 1], [Figure - 2]

    Tables

[Table - 1], [Table - 2]



 

Top
Print this article  Email this article
Previous article Next article

    

Online since 15th March '04
Published by Wolters Kluwer - Medknow