Twice Daily Versus Twice Weekly Soak-and-Seal Baths in Pediatric Atopic Dermatitis

Twice Daily Versus Twice Weekly Soak-and-Seal Baths in Pediatric Atopic Dermatitis: A Randomized, Single-blinded, Prospective Crossover Controlled Trial

There are few studies evaluating best bathing practices in the management of pediatric atopic dermatitis (AD). Trans-epidermal water loss plays a key role in the pathophysiology of AD. In concert with application of topical corticosteroids (TCS), we sought to investigate whether frequent soaking baths (i.e. twice daily for two weeks), followed immediately by application of an occlusive moisturizer (i.e. soak-and-seal), would be more effective than infrequent soaking baths (i.e. twice weekly for two weeks) in the management of AD.

To evaluate the effectiveness of twice daily soak-and-seal baths for improving severity of disease in children with AD, we implemented a randomized clinical trial using a single-blind, crossover-controlled design. Patients received the same moisturizer, cleanser, and class VI topical corticosteroid (TCS), and only bathing varied. After a 1 week run-in, children were randomized 1:1 into 2 groups: Group 1 underwent twice weekly soak-and-seal baths for 2 weeks ("dry method") followed by twice daily soak-and-seal baths for 2 weeks ("wet method"), and group 2 did the converse. A single treating physician assessed outcomes and, along with those analyzing the data, was masked to group assignment. Participants and their caregivers could not be masked. Analyses were based on intention to treat.

A single treating physician assessed outcomes and, along with those analyzing the data, was masked to group assignment. In other words, the care provider, investigator, and outcomes assessor were blinded to which bathing arm (twice daily or twice weekly) the study participants were in.

Infrequent soaking baths, in this study, is defined as twice a week soaking baths for 10 minutes or less, over 2 weeks. However, this is a crossover study design with two interventions: 1) Infrequent soaking baths, as defined above, and 2) Frequent soaking baths (defined as twice daily soaking baths for 15-20 minutes, over 2 weeks). All subjects in the study will undergo both interventions, but in different order. Thus, this is a study comparing Infrequent Versus Frequent Soaking Baths. Each subject serves as their own control.

Frequent soaking baths, in this study, is defined as twice daily soaking baths for 15-20 minutes, over 2 weeks. However, this is a crossover study design with two interventions: 1) Infrequent soaking baths, as defined in the first arm description above, and 2) Frequent soaking baths, as defined above in this arm description. All subjects in the study will undergo both interventions, but in different order. Thus, this is a study comparing Infrequent Versus Frequent Soaking Baths. Each subject serves as their own control.

Submersion of skin, affected by atopic dermatitis, in a bathtub filled with luke-warm water, where the frequency and duration of these baths are varied, to look for any differential effect.

SCORAD (which stands for SCORing Atopic Dermatitis eczema severity score) is a validated eczema severity score assessed by the treating physician. The scale ranges from 0-103, with higher numbers correlating with more severe/worse eczema.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion criteria. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in SCORAD from baseline (V2), for visits 3 minus visits 4.

ADQ (which stands for Atopic Dermatitis Quickscore) is a validated eczema severity score assessed by the caregivers of a child with AD. The scale ranges from 0-70, with higher numbers correlating with more severe/worse eczema.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion criteria. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in ADQ from baseline (V2), for visits 3 minus visits 4.

IDQOL (Which stands for Infant Dermatitis Quality of life index) is a validated quality of life measuring tool for AD. The scale ranges from 0-44, with higher numbers correlating with more severe/worse eczema.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion criteria. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in IDQOL from baseline (V2), for visits 3 minus visits 4.

CDLQI (Which stands for Children's Dermatology Life Quality Index) is a validated quality of life measuring tool for AD. The scale ranges from 0-40, with higher numbers correlating with more severe/worse eczema.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion criteria. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in CDLQI from baseline (V2), for visits 3 minus visits 4.

DFI (which stands for Dermatitis Family Impact) is a validated quality of life measuring tool for AD. The scale ranges from 0-40, with higher numbers correlating with more severe/worse eczema.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion criteria. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in DFI from baseline (V2), for visits 3 minus visits 4.

Relative quantities of S. aureus cultured from the skin. The scale ranges from 1+ rare, 2+ few, 3+ moderate, 4+ many, with higher numbers correlating with higher quantities of S. aureus on the skin.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in S. aureus from baseline (V2), for visits 3 minus visits visits 4.

Skin hydration status as measured by impedance-based capacitance utilizing the DPM 9003 instrument by Nova Tech. Corp. The scale ranges from 90-999, with higher values correlating with greater skin hydration.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in skin hydration from baseline (V2), for visits 3 minus visits 4.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in Desonide use from baseline (V2), for visits 3 minus visits 4.

Each subject undergoes 4 visits over 5 weeks. Visit 1 (V1) to establish if subject fulfills inclusion. V2 (baseline) is after a 1 week "run-in". 2 weeks between V2-V3 and V3-V4. Change in Vanicream use from baseline (V2), for visits 3 minus visits 4.

Inclusion Criteria: Infants and children ages 6 months to 11 years of age with moderate to severe atopic dermatitis according to the criteria of Hanifin and Rajka. Exclusion Criteria: Patients with suspected or established primary immune deficiency, patients receiving systemic corticosteroids, ultraviolet light therapy, immuno-therapeutic agents, and/or anti-infective drugs less than 1 month from the onset of the study.

Bieber T. Atopic dermatitis. N Engl J Med. 2008 Apr 3;358(14):1483-94. doi: 10.1056/NEJMra074081. No abstract available.

Elias PM, Hatano Y, Williams ML. Basis for the barrier abnormality in atopic dermatitis: outside-inside-outside pathogenic mechanisms. J Allergy Clin Immunol. 2008 Jun;121(6):1337-43. doi: 10.1016/j.jaci.2008.01.022. Epub 2008 Mar 7.

Akdis CA, Akdis M, Bieber T, Bindslev-Jensen C, Boguniewicz M, Eigenmann P, Hamid Q, Kapp A, Leung DY, Lipozencic J, Luger TA, Muraro A, Novak N, Platts-Mills TA, Rosenwasser L, Scheynius A, Simons FE, Spergel J, Turjanmaa K, Wahn U, Weidinger S, Werfel T, Zuberbier T; European Academy of Allergology and Clinical Immunology/American Academy of Allergy, Asthma and Immunology. Diagnosis and treatment of atopic dermatitis in children and adults: European Academy of Allergology and Clinical Immunology/American Academy of Allergy, Asthma and Immunology/PRACTALL Consensus Report. J Allergy Clin Immunol. 2006 Jul;118(1):152-69. doi: 10.1016/j.jaci.2006.03.045. Erratum In: J Allergy Clin Immunol. 2006 Sep;118(3):724.

Sator PG, Schmidt JB, Honigsmann H. Comparison of epidermal hydration and skin surface lipids in healthy individuals and in patients with atopic dermatitis. J Am Acad Dermatol. 2003 Mar;48(3):352-8. doi: 10.1067/mjd.2003.105.

Cork MJ, Robinson DA, Vasilopoulos Y, Ferguson A, Moustafa M, MacGowan A, Duff GW, Ward SJ, Tazi-Ahnini R. New perspectives on epidermal barrier dysfunction in atopic dermatitis: gene-environment interactions. J Allergy Clin Immunol. 2006 Jul;118(1):3-21; quiz 22-3. doi: 10.1016/j.jaci.2006.04.042. Epub 2006 Jun 9.

Werner Y, Lindberg M. Transepidermal water loss in dry and clinically normal skin in patients with atopic dermatitis. Acta Derm Venereol. 1985;65(2):102-5.

Chandar P, Nole G, Johnson AW. Understanding natural moisturizing mechanisms: implications for moisturizer technology. Cutis. 2009 Jul;84(1 Suppl):2-15.

O'Regan GM, Sandilands A, McLean WHI, Irvine AD. Filaggrin in atopic dermatitis. J Allergy Clin Immunol. 2008 Oct;122(4):689-693. doi: 10.1016/j.jaci.2008.08.002. Epub 2008 Sep 5.

McLean WH, Palmer CN, Henderson J, Kabesch M, Weidinger S, Irvine AD. Filaggrin variants confer susceptibility to asthma. J Allergy Clin Immunol. 2008 May;121(5):1294-5; author reply 1295-6. doi: 10.1016/j.jaci.2008.02.039. Epub 2008 Apr 8. No abstract available.

Tilles G, Wallach D, Taieb A. Topical therapy of atopic dermatitis: controversies from Hippocrates to topical immunomodulators. J Am Acad Dermatol. 2007 Feb;56(2):295-301. doi: 10.1016/j.jaad.2006.09.030.

Burkhart CG. Clinical assessment by atopic dermatitis patients of response to reduced soap bathing: pilot study. Int J Dermatol. 2008 Nov;47(11):1216-7. doi: 10.1111/j.1365-4632.2008.03829.x. No abstract available.

Hanifin JM, Tofte SJ. Update on therapy of atopic dermatitis. J Allergy Clin Immunol. 1999 Sep;104(3 Pt 2):S123-5. doi: 10.1016/s0091-6749(99)70054-0.

Tarr A, Iheanacho I. Should we use bath emollients for atopic eczema? BMJ. 2009 Nov 13;339:b4273. doi: 10.1136/bmj.b4273. No abstract available.

Gutman AB, Kligman AM, Sciacca J, James WD. Soak and smear: a standard technique revisited. Arch Dermatol. 2005 Dec;141(12):1556-9. doi: 10.1001/archderm.141.12.1556.

Chiang C, Eichenfield LF. Quantitative assessment of combination bathing and moisturizing regimens on skin hydration in atopic dermatitis. Pediatr Dermatol. 2009 May-Jun;26(3):273-8. doi: 10.1111/j.1525-1470.2009.00911.x.

Kameyoshi Y, Tanaka T, Mochizuki M, Koro O, Mihara S, Hiragun T, Tanaka M, Hide M. [Taking showers at school is beneficial for children with severer atopic dermatitis]. Arerugi. 2008 Feb;57(2):130-7. Japanese.

Mochizuki H, Muramatsu R, Tadaki H, Mizuno T, Arakawa H, Morikawa A. Effects of skin care with shower therapy on children with atopic dermatitis in elementary schools. Pediatr Dermatol. 2009 Mar-Apr;26(2):223-5. doi: 10.1111/j.1525-1470.2009.00887.x.

Cardona ID, Cho SH, Leung DY. Role of bacterial superantigens in atopic dermatitis : implications for future therapeutic strategies. Am J Clin Dermatol. 2006;7(5):273-9. doi: 10.2165/00128071-200607050-00001.

Huang JT, Abrams M, Tlougan B, Rademaker A, Paller AS. Treatment of Staphylococcus aureus colonization in atopic dermatitis decreases disease severity. Pediatrics. 2009 May;123(5):e808-14. doi: 10.1542/peds.2008-2217.

Breneman DL, Hanifin JM, Berge CA, Keswick BH, Neumann PB. The effect of antibacterial soap with 1.5% triclocarban on Staphylococcus aureus in patients with atopic dermatitis. Cutis. 2000 Oct;66(4):296-300.

Kubota K, Machida I, Tamura K, Take H, Kurabayashi H, Akiba T, Tamura J. Treatment of refractory cases of atopic dermatitis with acidic hot-spring bathing. Acta Derm Venereol. 1997 Nov;77(6):452-4. doi: 10.2340/0001555577452454.

Murota H, Takahashi A, Nishioka M, Matsui S, Terao M, Kitaba S, Katayama I. Showering reduces atopic dermatitis in elementary school students. Eur J Dermatol. 2010 May-Jun;20(3):410-1. doi: 10.1684/ejd.2010.0928. Epub 2010 Apr 23. No abstract available.

Schuttelaar ML, Coenraads PJ. A randomized, double-blind study to assess the efficacy of addition of tetracycline to triamcinolone acetonide in the treatment of moderate to severe atopic dermatitis. J Eur Acad Dermatol Venereol. 2008 Sep;22(9):1076-82. doi: 10.1111/j.1468-3083.2008.02716.x. Epub 2008 Apr 1.

Severity scoring of atopic dermatitis: the SCORAD index. Consensus Report of the European Task Force on Atopic Dermatitis. Dermatology. 1993;186(1):23-31. doi: 10.1159/000247298.

Carel K, Bratton DL, Miyazawa N, Gyorkos E, Kelsay K, Bender B, Strand M, Atkins D, Gelfand EW, Klinnert MD. The Atopic Dermatitis Quickscore (ADQ): validation of a new parent-administered atopic dermatitis scoring tool. Ann Allergy Asthma Immunol. 2008 Nov;101(5):500-7. doi: 10.1016/S1081-1206(10)60289-X.

Lewis-Jones MS, Finlay AY, Dykes PJ. The Infants' Dermatitis Quality of Life Index. Br J Dermatol. 2001 Jan;144(1):104-10. doi: 10.1046/j.1365-2133.2001.03960.x.

Woo SI, Kim JY, Lee YJ, Kim NS, Hahn YS. Effect of Lactobacillus sakei supplementation in children with atopic eczema-dermatitis syndrome. Ann Allergy Asthma Immunol. 2010 Apr;104(4):343-8. doi: 10.1016/j.anai.2010.01.020.

Gruber C, Wendt M, Sulser C, Lau S, Kulig M, Wahn U, Werfel T, Niggemann B. Randomized, placebo-controlled trial of Lactobacillus rhamnosus GG as treatment of atopic dermatitis in infancy. Allergy. 2007 Nov;62(11):1270-6. doi: 10.1111/j.1398-9995.2007.01543.x.

Meggitt SJ, Gray JC, Reynolds NJ. Azathioprine dosed by thiopurine methyltransferase activity for moderate-to-severe atopic eczema: a double-blind, randomised controlled trial. Lancet. 2006 Mar 11;367(9513):839-46. doi: 10.1016/S0140-6736(06)68340-2.