Probiotics in the Treatment of Atopic Dermatitis
Are probiotics helpful in the treatment and the prevention of atopic dermatitis?
Atopic dermatitis is one of the epidemically expanding non-infectious diseases in the 21 century. It poses immense challenges to both patients and physicians. With a steady growth in its incidence and prevalence, the disease carries a heavy social and economic burden.
Atopic dermatitis (AD, syn. ‘atopic eczema’) is the commonest inflammatory skin disorder in children and represents a serious problem for the providers of health care all over the world (1-4) with an impressive effect on patients' quality of life (1),(5-9). In 40–60% of paediatric patients with AD persist having symptoms later on in life (10, 11). Although AD often starts in early infancy, there are adult onset forms which start in adolescence or adulthood (11). Most of the patients with AD can control their skin disease with topical therapy and emollient skin care. There is a considerable group of patients with severe AD who do not respond to the prescribed treatment with moisturizers, topical corticosteroids (TCS), and/or topical calcineurin inhibitors (TCI) or experience immediate flare-ups after tapering topical anti-inflammatory therapy.
Probiotics and prebiotics appear to be effective in reducing the incidence of atopic dermatitis in infants, but their role in atopic dermatitis treatment is controversial (13). The clinical research supporting the use of probiotics for the treatment and prevention of AD are very limited. The positive effect may be related to the type of probiotic strain used, the method of administration, onset time, as well as the dose size and duration of treatment (12). Based on current systematic review evidence, the most promising intervention for the prevention of AD is the use of probiotics (and possibly prebiotics) during the late stages of pregnancy and early life (14-15).
Most of the conducted studies concluded that the incidence of AD was lower in the probiotic administered cases than the controls. They reported less episodes of AD in the infants of mothers who received any of the probiotic supplements compared to the placebo group; however, there was no difference in skin prick tests among the experimental groups (16).
There is no reliable evidence to date that strongly supports their safe application of probiotics. In spite of the weak evidence, a considerable number of clinicians prescribe the use of probiotics for the prevention of eczema (18).
AD is a multi-factor disease that requests personalized approach. The step-wise model with regard to the disease severity provides a practical algorithm to the disease management. Patient and parent therapeutic education represent an important element of the treatment plan. The future of AD treatment belongs to novel biological therapeutic agents coming in the recent years.
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12. Allen S. J., Jordan S., Storey M., Thornton C. A., Gravenor M. B., Garaiova I., et al. Probiotics in the prevention of eczema: a randomised controlled trial. Arch. Dis. Child. 99. 2014. 1014–1019.
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17. Barclay L. Benefits of probiotics reviewed. Am Fam Physician 2008;78:107
18. Rather IA, Bajpai VK, Kumar S, Lim J, Paek WK, Park Y-H. Probiotics and Atopic Dermatitis: An Overview. Frontiers in Microbiology. 2016;7:507
Tokuda Hospital Sofia
Dermatologic Clinic Sofia