Seasonal Variation in Contact Hypersensitivity to Parthenium in Patients of Parthenium Dermatitis
Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis varies with season. However, the effect of seasonal variation on the TCH as determined by patch test to Parthenium has not been studied. To stu...
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| Published in | Indian journal of dermatology Vol. 61; no. 1; pp. 53 - 56 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
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India
Medknow Publications and Media Pvt. Ltd
01.01.2016
Medknow Publications & Media Pvt. Ltd Medknow Publications & Media Pvt Ltd Wolters Kluwer Medknow Publications |
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| Abstract | Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis varies with season. However, the effect of seasonal variation on the TCH as determined by patch test to Parthenium has not been studied.
To study the effect of seasonal variation on TCH to Parthenium hysterophorus in patients with Parthenium dermatitis.
It was a prospective investigational study on clinically and patch test confirmed patients with airborne contact dermatitis to P. hysterophorus. The TCH values at baseline and after 6 months were recorded. The patients who were recruited in summers (April to September) and whose repeat patch test and TCH were determined in winters (October to March) were identified as Group I and those who were recruited in reverse order were identified as Group II.
The study had 47 patients, of which 23 were in Group I and 24 in Group II. Mean TCH in Group, I (summer to winter) in period I (summer) was 0.11 ± 0.28 whereas that in period II (winter), was 0.76± 0.41. Similarly, mean TCH in Group II (winter to summer) in period I (winter) and period II (summer) were 0.34± 0.44 and 0.166± 0.32, respectively. The difference in TCH values (95% confidence interval) in the two groups with a change of season was -0.41 (-0.58, -0.24) (P < 0.0001).
TCH values in Parthenium dermatitis are lower in the summer season, indicating increased sensitivity to Parthenium allergen in summer. |
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| AbstractList | Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis varies with season. However, the effect of seasonal variation on the TCH as determined by patch test to Parthenium has not been studied.
To study the effect of seasonal variation on TCH to Parthenium hysterophorus in patients with Parthenium dermatitis.
It was a prospective investigational study on clinically and patch test confirmed patients with airborne contact dermatitis to P. hysterophorus. The TCH values at baseline and after 6 months were recorded. The patients who were recruited in summers (April to September) and whose repeat patch test and TCH were determined in winters (October to March) were identified as Group I and those who were recruited in reverse order were identified as Group II.
The study had 47 patients, of which 23 were in Group I and 24 in Group II. Mean TCH in Group, I (summer to winter) in period I (summer) was 0.11 ± 0.28 whereas that in period II (winter), was 0.76± 0.41. Similarly, mean TCH in Group II (winter to summer) in period I (winter) and period II (summer) were 0.34± 0.44 and 0.166± 0.32, respectively. The difference in TCH values (95% confidence interval) in the two groups with a change of season was -0.41 (-0.58, -0.24) (P < 0.0001).
TCH values in Parthenium dermatitis are lower in the summer season, indicating increased sensitivity to Parthenium allergen in summer. Background: Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis varies with season. However, the effect of seasonal variation on the TCH as determined by patch test to Parthenium has not been studied. Objective: To study the effect of seasonal variation on TCH to Parthenium hysterophorus in patients with Parthenium dermatitis. Materials and Methods: It was a prospective investigational study on clinically and patch test confirmed patients with airborne contact dermatitis to P. hysterophorus. The TCH values at baseline and after 6 months were recorded. The patients who were recruited in summers (April to September) and whose repeat patch test and TCH were determined in winters (October to March) were identified as Group I and those who were recruited in reverse order were identified as Group II. Results: The study had 47 patients, of which 23 were in Group I and 24 in Group II. Mean TCH in Group, I (summer to winter) in period I (summer) was 0.11 +- 0.28 whereas that in period II (winter), was 0.76+- 0.41. Similarly, mean TCH in Group II (winter to summer) in period I (winter) and period II (summer) were 0.34+- 0.44 and 0.166+- 0.32, respectively. The difference in TCH values (95% confidence interval) in the two groups with a change of season was -0.41 (-0.58, -0.24) (P < 0.0001). Conclusions: TCH values in Parthenium dermatitis are lower in the summer season, indicating increased sensitivity to Parthenium allergen in summer. BACKGROUNDTiter of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis varies with season. However, the effect of seasonal variation on the TCH as determined by patch test to Parthenium has not been studied.OBJECTIVETo study the effect of seasonal variation on TCH to Parthenium hysterophorus in patients with Parthenium dermatitis.MATERIALS AND METHODSIt was a prospective investigational study on clinically and patch test confirmed patients with airborne contact dermatitis to P. hysterophorus. The TCH values at baseline and after 6 months were recorded. The patients who were recruited in summers (April to September) and whose repeat patch test and TCH were determined in winters (October to March) were identified as Group I and those who were recruited in reverse order were identified as Group II.RESULTSThe study had 47 patients, of which 23 were in Group I and 24 in Group II. Mean TCH in Group, I (summer to winter) in period I (summer) was 0.11 ± 0.28 whereas that in period II (winter), was 0.76± 0.41. Similarly, mean TCH in Group II (winter to summer) in period I (winter) and period II (summer) were 0.34± 0.44 and 0.166± 0.32, respectively. The difference in TCH values (95% confidence interval) in the two groups with a change of season was -0.41 (-0.58, -0.24) (P < 0.0001).CONCLUSIONSTCH values in Parthenium dermatitis are lower in the summer season, indicating increased sensitivity to Parthenium allergen in summer. Background: Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis varies with season. However, the effect of seasonal variation on the TCH as determined by patch test to Parthenium has not been studied. Objective: To study the effect of seasonal variation on TCH to Parthenium hysterophorus in patients with Parthenium dermatitis. Materials and Methods: It was a prospective investigational study on clinically and patch test confirmed patients with airborne contact dermatitis to P. hysterophorus. The TCH values at baseline and after 6 months were recorded. The patients who were recruited in summers (April to September) and whose repeat patch test and TCH were determined in winters (October to March) were identified as Group I and those who were recruited in reverse order were identified as Group II. Results: The study had 47 patients, of which 23 were in Group I and 24 in Group II. Mean TCH in Group, I (summer to winter) in period I (summer) was 0.11 ± 0.28 whereas that in period II (winter), was 0.76± 0.41. Similarly, mean TCH in Group II (winter to summer) in period I (winter) and period II (summer) were 0.34± 0.44 and 0.166± 0.32, respectively. The difference in TCH values (95% confidence interval) in the two groups with a change of season was −0.41 (−0.58, −0.24) (P < 0.0001). Conclusions: TCH values in Parthenium dermatitis are lower in the summer season, indicating increased sensitivity to Parthenium allergen in summer. |
| Audience | Academic |
| Author | Verma, Kaushal K Singh, Saurabh Pandey, R M Kumar, Pradip |
| AuthorAffiliation | From the Department of Dermatology and Venereology, All India Institute of Medical Sciences, New Delhi, India 1 Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India |
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/26955095$$D View this record in MEDLINE/PubMed |
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| Cites_doi | 10.1034/j.1600-0536.2001.044003146.x |
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| Keywords | seasonal variation patch test Allergic contact dermatitis to Parthenium Parthenium dermatitis Parthenium hysterophorus titer of contact hypersensitivity |
| Language | English |
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| References | Davis (key-10.4103/0019-5154.174026-2) 2011 Raman (key-10.4103/0019-5154.174026-4) 2000 Verma (key-10.4103/0019-5154.174026-9) 2002 Verma (key-10.4103/0019-5154.174026-10) 2004 Uter (key-10.4103/0019-5154.174026-11) 2008 Kranke (key-10.4103/0019-5154.174026-14) 1996 Sharma (key-10.4103/0019-5154.174026-8) 2007 Hegewald (key-10.4103/0019-5154.174026-13) 2008 Katsarou (key-10.4103/0019-5154.174026-16) 1992 Sharma (key-10.4103/0019-5154.174026-7) 1987 Verma (key-10.4103/0019-5154.174026-5) 2015 Verma (key-10.4103/0019-5154.174026-1) 2001 Pasricha (key-10.4103/0019-5154.174026-3) 1986 key-10.4103/0019-5154.174026-12 Pasricha (key-10.4103/0019-5154.174026-6) 1982 Sjövall (key-10.4103/0019-5154.174026-15) 1986 |
| References_xml | – start-page: 183 volume-title: Parthenium dermatitis year: 2007 ident: key-10.4103/0019-5154.174026-8 publication-title: Dermatitis contributor: fullname: Sharma – start-page: 366 volume-title: Reproducibility of titre of contact hypersensitivity to Parthenium hysterophorus year: 2000 ident: key-10.4103/0019-5154.174026-4 publication-title: Contact Dermatitis contributor: fullname: Raman – start-page: 210 issn: 0378-6323 volume-title: Failure of titer of contact hypersensitivity to correlate with clinical severity and therapeutic response in contact dermatitis caused by Parthenium year: 2004 ident: key-10.4103/0019-5154.174026-10 publication-title: Indian J Dermatol Venereol Leprol contributor: fullname: Verma – start-page: 232 volume-title: Seasonal influence on patch test results in Greece year: 1992 ident: key-10.4103/0019-5154.174026-16 publication-title: Photodermatol Photoimmunol Photomed contributor: fullname: Katsarou – start-page: 215 volume-title: Seasonal influence on patch test results in central Europe year: 1996 ident: key-10.4103/0019-5154.174026-14 publication-title: Contact Dermatitis contributor: fullname: Kranke – start-page: 290 volume-title: Local and systemic effect of ultraviolet irradiation (UVB and UVA) on human allergic contact dermatitis year: 1986 ident: key-10.4103/0019-5154.174026-15 publication-title: Acta Derm Venereol contributor: fullname: Sjövall – start-page: 251 issn: 0378-6323 volume-title: Weekly azathioprine pulse versus daily azathioprine in the treatment of Parthenium dermatitis: A non-inferiority randomized controlled study year: 2015 ident: key-10.4103/0019-5154.174026-5 publication-title: Indian J Dermatol Venereol Leprol contributor: fullname: Verma – start-page: 383 issn: 0019-5154 volume-title: Clinical evaluation of patients patch tested with plant series: A prospective study year: 2011 ident: key-10.4103/0019-5154.174026-2 publication-title: Indian J Dermatol contributor: fullname: Davis – start-page: 327 issn: 0378-6323 volume-title: Evaluation of antigen impregnated discs for patch tests year: 1982 ident: key-10.4103/0019-5154.174026-6 publication-title: Indian J Dermatol Venereol Leprol contributor: fullname: Pasricha – start-page: 195 issn: 0378-6323 volume-title: Titre of contact hypersensitivity (TCH) as a means of determining the degree of hypersensitivity in contact dermatitis year: 1986 ident: key-10.4103/0019-5154.174026-3 publication-title: Indian J Dermatol Venereol Leprol contributor: fullname: Pasricha – start-page: 791 volume-title: Contact dermatitis due to plants - Challenges and prospects year: 2001 ident: key-10.4103/0019-5154.174026-1 publication-title: Indian Pract contributor: fullname: Verma – start-page: 26 issn: 0378-6323 volume-title: Contact dermatitis to plants in Chandigarh year: 1987 ident: key-10.4103/0019-5154.174026-7 publication-title: Indian J Dermatol Venereol Leprol contributor: fullname: Sharma – start-page: 316 volume-title: Meteorological conditions and the diagnosis of occupationally related contact sensitizations year: 2008 ident: key-10.4103/0019-5154.174026-13 publication-title: Scand J Work Environ Health contributor: fullname: Hegewald – start-page: 734 volume-title: The impact of meteorological conditions on patch test results with 12 standard series allergens (fragrances, biocides, topical ingredients) year: 2008 ident: key-10.4103/0019-5154.174026-11 publication-title: Br J Dermatol contributor: fullname: Uter – ident: key-10.4103/0019-5154.174026-12 doi: 10.1034/j.1600-0536.2001.044003146.x – start-page: 286 volume-title: Parthenium dermatitis presenting as photosensitive lichenoid eruption.A new clinical variant year: 2002 ident: key-10.4103/0019-5154.174026-9 publication-title: Contact Dermatitis contributor: fullname: Verma |
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| Snippet | Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium dermatitis... Background: Titer of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium... BACKGROUNDTiter of contact hypersensitivity (TCH) is a measure of contact hypersensitivity to an allergen in an individual. Clinical severity of Parthenium... |
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| StartPage | 53 |
| SubjectTerms | Allergens Allergic contact dermatitis to Parthenium Care and treatment Contact dermatitis Diagnosis Original Parthenium dermatitis Parthenium hysterophorus patch test seasonal variation Skin tests titer of contact hypersensitivity |
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| Title | Seasonal Variation in Contact Hypersensitivity to Parthenium in Patients of Parthenium Dermatitis |
| URI | https://www.ncbi.nlm.nih.gov/pubmed/26955095 https://www.proquest.com/docview/1760838482 https://search.proquest.com/docview/1772146486 https://pubmed.ncbi.nlm.nih.gov/PMC4763695 https://doaj.org/article/478c55859a464eec995e5d15f2c814bc |
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