{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T00:54:54Z","timestamp":1792457694082,"version":"4.5.0"},"reference-count":18,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2004,9,7]],"date-time":"2004-09-07T00:00:00Z","timestamp":1094515200000},"content-version":"vor","delay-in-days":6,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Dermatology"],"published-print":{"date-parts":[[2004,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Background\u2002<\/jats:bold> We undertook this study in order to determine the pattern and prevalence of childhood psoriasis in northern India and to highlight the differences and similarities with previous studies.<\/jats:p><jats:p><jats:bold>Materials and methods\u2002<\/jats:bold> In this retrospective epidemiologic study, the data from 419 children (less than 14\u00a0years of age) with psoriasis registered at the Psoriasis Clinic between January 1990 and December 2002 were included.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> The 419 children registered at the Psoriasis Clinic constituted 0.3% of the dermatology outpatients and 12.5% of the total psoriasis patients seen over a period of 13\u00a0years in the department. There were 219 (52.2%) boys and 200 (47.7%) girls, with a male to female ratio of 1.09\u00a0:\u00a01. The age of onset ranged from 4\u00a0days to 14\u00a0years. The mean age of onset was 8.1\u00a0\u00b1\u00a02.1\u00a0years in boys and 9.3\u00a0\u00b1\u00a02.3\u00a0years in girls. The peak age of onset in boys was in the 6\u201310\u2010year age group, whereas the majority of girls showed an onset of psoriasis between the ages of 10 and 14\u00a0years. A positive family history was present in only 19 (4.5%) patients. The extensors of the legs were the most common initial site affected [105 (25%) cases], followed by the scalp [87 (20.7%)]. Classical plaque psoriasis was the most frequent clinical presentation [254 (60.6%) patients], followed by plantar psoriasis [54 (12.8%)]. Nail involvement was observed in 130 (31%) cases. All types of nail changes described in psoriasis were seen in these patients. Pitting was the most common nail change, followed by ridging and discoloration. Five children (1.1%) (three girls and two boys) had psoriatic arthropathy. Precipitating factors that brought about the onset of the disease or were associated with exacerbation could be recalled in only 28 (6.6%) patients. Koebnerization was observed in 27.9% of patients. Pruritus was the most frequent symptom, reported by 365 (87.1%) children. Twenty\u2010seven (6.4%) children had other concurrent mucocutaneous diseases (vitiligo, pityriasis alba, alopecia areata, ichthyosis vulgaris, halo nevus, aphthous stomatitis, urticaria, pityriasis versicolor, nummular eczema, salmon patch, and verrucous epidermal nevus). Eighteen children had systemic disorders, including seizures, bronchial asthma, mitral regurgitation, scleroderma, Down's syndrome, high arched palate, cholelithiasis, anterior mongoloid slant, and prognathism; however, these conditions were possibly chance findings only and no correlation with the age of onset or severity of the disease was found.<\/jats:p><jats:p><jats:bold>Conclusions\u2002<\/jats:bold> Our findings differ from those of previous studies in showing a delayed onset, equal sex distribution, less frequent facial involvement, uncommon guttate lesions, more frequent involvement of the soles, and a less frequent history of familial occurrence.<\/jats:p>","DOI":"10.1111\/j.1365-4632.2004.02182.x","type":"journal-article","created":{"date-parts":[[2004,9,7]],"date-time":"2004-09-07T13:36:09Z","timestamp":1094564169000},"page":"654-658","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":120,"title":["Epidemiology of childhood psoriasis: a study of 419 patients from northern India"],"prefix":"10.1111","volume":"43","author":[{"given":"Bhushan","family":"Kumar","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rajesh","family":"Jain","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kamaldeep","family":"Sandhu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Inderjeet","family":"Kaur","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sanjeev","family":"Handa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2004,9,7]]},"reference":[{"key":"e_1_2_4_2_2","doi-asserted-by":"publisher","DOI":"10.1159\/000251595"},{"key":"e_1_2_4_3_2","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1001\/archderm.1972.01620050011002","article-title":"The genetics of psoriasis","volume":"105","author":"Watson W","year":"1972","journal-title":"Arch Dermatol"},{"key":"e_1_2_4_4_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2133.1975.tb03105.x"},{"key":"e_1_2_4_5_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1525-1470.2001.018003188.x"},{"key":"e_1_2_4_6_2","first-page":"1266","article-title":"Infantile psoriasis","volume":"131","author":"Farber EM","year":"1977","journal-title":"Am J Dis Child"},{"key":"e_1_2_4_7_2","first-page":"53","volume-title":"Psoriasis: Proceedings of the International Symposium","author":"Asboe Hansen G","year":"1971"},{"key":"e_1_2_4_8_2","first-page":"415","article-title":"Psoriasis in childhood","volume":"105","author":"Farber EM","year":"1966","journal-title":"Calif Med"},{"key":"e_1_2_4_9_2","first-page":"774","article-title":"Relationship of mild to severe psoriasis","volume":"13","author":"Farber EM","year":"1974","journal-title":"Cutis"},{"key":"e_1_2_4_10_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1346-8138.1997.tb02779.x"},{"key":"e_1_2_4_11_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1525-1470.1986.tb00520.x"},{"key":"e_1_2_4_12_2","first-page":"47","article-title":"Psoriasis in children. 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