Indexed with PubMed and Science Citation Index (E) 
Users online: 4667 
     Home | Feedback | Login 
About Current Issue Archive Ahead of print Search Instructions Online Submission Subscribe What's New Contact  
    Next article
    Previous article
    Table of Contents

    Similar in PUBMED
    Search Pubmed for
    Search in Google Scholar for
  Related articles
    Citation Manager
    Access Statistics
    Reader Comments
    Email Alert *
    Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded118    
    Comments [Add]    
    Cited by others 2    

Recommend this journal


Year : 2004  |  Volume : 70  |  Issue : 4  |  Page : 210--213

Failure of titer of contact hypersensitivity to correlate with clinical severity and therapeutic response in contact dermatitis caused by parthenium

1 Departments of Dermatology and Venereology, All India Institute of Medical Sciences, New Delhi, India
2 Departments of Biostatistics, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
Kaushal K Verma
Department of Dermatology and Venereology, All India Institute of Medical Sciences, New Delhi - 110029
Login to access the Email id

Source of Support: None, Conflict of Interest: None

PMID: 17642616

Rights and PermissionsRights and Permissions

Background: The titer of contact hypersensitivity (TCH) has been used to determine the degree of contact hypersensitivity in patients with contact dermatitis. The values have been found to vary in different individuals and also in the same individual at different times apparently due to the varying severity of the disease. We evaluated the correlation of TCH with disease severity and therapeutic response in patients of contact dermatitis caused by the plant Parthenium hysterophorus. Methods: Forty-two patients, 30 (71.4%) males and 12 (28.6%) females, aged between 30-75 years, having air-borne contact dermatitis to Parthenium hysterophorus for 0.5-20 years were included in the study. The disease severity and TCH at baseline were recorded in all the patients. They were treated with azathioprine and followed up every month for 4-69 months. The TCH was repeated every 3 months and the last recorded TCH value was taken for analysis in each patient. Results: The baseline clinical severity score (CSS) varied from 10-80 (mean SD: 35.47 19.41) in these patients. It ranged from 10-30 in 22 (52.4%) patients, from 31-50 in 14 (33.3%) patients, and was more than 50 in 6 (14.3%) patients. The baseline TCH to Parthenium was undiluted (UD) in 2 (4.8%), 1:10 in 15 (35.7%), 1:100 in 20 (47.6%), and 1:1000 in 5 (11.9%) patients respectively. At the end of the study, the clinical severity of the disease decreased in most of the patients. The CSS came down to 0 in 31 patients, to 10-20, and to 50 in 4 patients each, but remained stable in three patients who had baseline CSS from 20-40. The overall mean CSS came down from 35.47 19.41 to 4.76 9.43 (p = 0.002). However, there was no significant change in the TCH levels over time (p = 0.153). The last TCH value was negative in 2 (4.8%) patients, undiluted in 5 (11.9%), 1:10 in 10 (23.8%), 1:100 in 18 (42.9%), and 1:1000 in 7 (16.7%) patients. There was no change in the TCH values in 16 (38.1%) patients while it increased or decreased by 1-2 dilutions in 12 (28.6%) patients each. Conclusions: We therefore conclude that the TCH does not correlate with the clinical severity of contact dermatitis or response to treatment.


Print this article     Email this article

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