Hair dye treatment use and clinical course in @entity1 with XXXX and @entity3830 .

@entity1 @entity17072 @entity1252 @entity3830 @entity11534 @entity34
The etiological role of @entity34 ( @entity34 ), some of them such as permanent hair dyes containing @entity17072 , in the development of @entity1252 has been previously ruled out. However, the possible influence of @entity34 use on the course and prognosis of @entity1252 @entity1 has been assessed only in one short-term study. Since @entity34 is very extensive among the population, the knowledge of this possible negative effect may be very important. Thus, the aim of this study was to assess the long-term influence of several HDTs on the course and clinical severity of @entity1 with both @entity1252 ( @entity1252 ) and @entity3830 ( @entity3830 ). In this longitudinal case series study, 91 @entity1252 @entity1 and 22 @entity3830 @entity1 were prospectively studied from October 1988 to May 2000. They were divided into three groups: (a) non- @entity34 users-- @entity1 who have never used @entity34 (n = 65); (b) P- @entity34 users-- @entity34 permanent type users, alone or in combination with other types of @entity34 (n = 28); (c) non P- @entity34 --users of other treatments different from permanent tinting (bleach, lowlights, etc; n = 20). In each @entity1 we determined: (1) number of flares/year in @entity1252 @entity1 and worsening of cutaneous lesions for @entity3830 ; (2) @entity1252 International Collaborating Clinics/American College of Rheumatology (SLICC/ACR) damage index; (3) predominant damaged organs/systems according to the @entity34 use and type of @entity34 ; and (4) subjective impression about the disease evolution in relation to @entity34 use. No significant differences were found with respect to flares/year and SLICC/ACR damage index between the study groups. Non- @entity34 group presented more renal involvement and @entity11534 than both @entity34 -user groups. No @entity1 related the @entity34 use to the worsening of his disease. Therefore, in this study no evidence of an association between the long-term use of several types of @entity34 and the clinical activity and course of @entity1252 and @entity3830 was found.
