Psoriasis

Psoriasis is a chronic autoimmune inflammatory skin condition characterized by rapid skin cell turnover, leading to thick, scaly plaques. It affects approximately 2–3% of the global population and has no cure — management focuses on reducing symptoms and preventing flares.

Relevance to Peat Therapy

Psoriasis is one of the most studied conditions in peat balneotherapy. The combination of anti-inflammatory, keratolytic, and immunomodulatory mechanisms in peat-derived substances addresses multiple aspects of psoriatic pathology simultaneously. Peat baths have a long tradition in Central European spa medicine for psoriasis management.

Pathways Where Peat May Help

The inflammatory cascade in psoriasis involves TNF-α, IL-17, and IL-23 — humic acids have demonstrated inhibition of TNF-α in vitro. The keratolytic properties of humic substances help soften and reduce plaque buildup. The thermal retention of peat baths enhances cutaneous blood flow, which may improve drug delivery and skin healing.

Evidence Landscape

Most evidence comes from balneotherapy studies in Central Europe (Czech Republic, Hungary, Germany) where peat baths have been used in spa medicine for decades. Evidence is predominantly cohort studies and clinical observations rather than large RCTs. Several studies report significant PASI score improvements after 2–3 weeks of daily peat bath treatment.