title: Hand contact dermatitis in hairdressers: clinical and causative allergens, experience in Bangkok.
abstract: BACKGROUND
  Hand dermatitis in hairdressers is a common occupational contact dermatitis. Irritant contact dermatitis is thought to be more common.
  
  
  OBJECTIVE
  To investigate the causes of hand dermatitis, common allergens, clinical patterns, morphology and onset of lesions among hairdressers.
  
  
  METHODS
  Forty four hairdressers who were diagnosed with hand dermatitis in a dermatological outpatient department were included and investigated by patch testing with standard and hairdressing related allergens and/or prick test.
  
  
  RESULTS
  Allergic contact dermatitis was diagnosed with a positive patch test reaction in 33 cases (75%), irritant contact dermatitis was found in 11 cases (25%). The clinical manifestations were mostly scaly plaques (68.18%) or vesicles (50%). The most common site of involvement was the palms (38.63%). The common causative allergens were paraphenylenediamine (45.45%), nickel (31.18%), fragrance mix (20.45%), p-toluenediamine sulphate (18.18%), ammonium persulfate (13.63%), and p-aminophenol (13.63%).
  
  
  CONCLUSIONS
  Allergic contact dermatitis is more common among hairdressers, PPD was the most common causative allergen in our study.
authors: Contact & Occupational Dermatitis Clinic, Institute of Dermatology, 420/7 Rajavithi Rd, Phayathai, Bangkok, 10400 Thailand.
authors: Poohglin
authors: P
authors: Tresukosol
authors: Chanutta
authors: C
authors: Swasdivanich
mesh_terms: D000293:Adolescent; D000328:Adult; D000485:Allergens / Q000009:adverse effects / Q000276:immunology*; D004396:Coloring Agents / Q000009:adverse effects*; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis / Q000209:etiology / Q000276:immunology* / Q000473:pathology; D005260:Female; D006225:Hand; D006801:Humans; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects*; D010655:Phenylenediamines / Q000009:adverse effects*; D013785:Thailand
chemical_list: D000485:Allergens; D004396:Coloring Agents; D010655:Phenylenediamines; C029728:4-phenylenediamine