Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series

BackgroundTraditional Chinese Medicine (TCM) has demonstrated certain efficacy in the treatment of psoriasis, a chronic papulosquamous skin disease. However, in rare instances, the use of TCM may exacerbate cutaneous lesions. This study aims to explore whether the methotrexate (MTX) component in TCM...

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Main Authors: Yunhong Zheng, Yinzi Dubai, Ruizhe Wang, Suju Luo
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Allergy
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Online Access:https://www.frontiersin.org/articles/10.3389/falgy.2025.1634055/full
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author Yunhong Zheng
Yunhong Zheng
Yinzi Dubai
Ruizhe Wang
Suju Luo
author_facet Yunhong Zheng
Yunhong Zheng
Yinzi Dubai
Ruizhe Wang
Suju Luo
author_sort Yunhong Zheng
collection DOAJ
description BackgroundTraditional Chinese Medicine (TCM) has demonstrated certain efficacy in the treatment of psoriasis, a chronic papulosquamous skin disease. However, in rare instances, the use of TCM may exacerbate cutaneous lesions. This study aims to explore whether the methotrexate (MTX) component in TCM may increase the risk of cutaneous ulceration in patients with psoriasis. MTX is also an immunosuppressive agent widely used in the treatment of various dermatologic conditions.MethodsWe retrospectively analyzed the medical records of five patients who developed painful skin ulcers at primary psoriatic sites after taking TCM. Evaluated indicators included hemocytopenia, liver function, serum MTX concentration, and ABCB1 gene polymorphisms. Histopathological examination was also performed on ulcerative tissue samples.ResultsAmong the five patients, two developed hemocytopenia and two had abnormal liver function. Serum MTX concentrations in two patients ranged from 0.03 to 0.11 μmol/L (<0.1 μmol/L at 72 h after MTX administration). The ABCB1 genotypes AA and AG were detected in two different patients. Histopathological findings revealed dyskeratosis of keratinocytes, dermal vasodilation, and inflammatory cell infiltration. Rescue treatment with oral folic acid was administered to three patients, leading to complete healing of all lesions within two weeks. The remaining two patients showed gradual improvement in skin ulcers after discontinuing TCM.ConclusionsTCM containing MTX may induce skin ulceration in rare cases among patients with psoriasis.
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spelling doaj-art-375f4855c43849e1807d2ede5833021c2025-08-20T03:47:23ZengFrontiers Media S.A.Frontiers in Allergy2673-61012025-06-01610.3389/falgy.2025.16340551634055Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case seriesYunhong Zheng0Yunhong Zheng1Yinzi Dubai2Ruizhe Wang3Suju Luo4Department of Dermatovenereology, Tianjin Medical University General Hospital/Tianjin Institute of Sexually Transmitted Disease, Tianjin, ChinaDepartment of Dermatology, Ulanqab Central Hospital, Inner Mongolia, Ulanqab, ChinaDepartment of Dermatovenereology, Tianjin Medical University General Hospital/Tianjin Institute of Sexually Transmitted Disease, Tianjin, ChinaDepartment of Dermatology, Gem Flower Xi'an Chang Qing Staff Hospital, Xi’an, ChinaDepartment of Dermatovenereology, Tianjin Medical University General Hospital/Tianjin Institute of Sexually Transmitted Disease, Tianjin, ChinaBackgroundTraditional Chinese Medicine (TCM) has demonstrated certain efficacy in the treatment of psoriasis, a chronic papulosquamous skin disease. However, in rare instances, the use of TCM may exacerbate cutaneous lesions. This study aims to explore whether the methotrexate (MTX) component in TCM may increase the risk of cutaneous ulceration in patients with psoriasis. MTX is also an immunosuppressive agent widely used in the treatment of various dermatologic conditions.MethodsWe retrospectively analyzed the medical records of five patients who developed painful skin ulcers at primary psoriatic sites after taking TCM. Evaluated indicators included hemocytopenia, liver function, serum MTX concentration, and ABCB1 gene polymorphisms. Histopathological examination was also performed on ulcerative tissue samples.ResultsAmong the five patients, two developed hemocytopenia and two had abnormal liver function. Serum MTX concentrations in two patients ranged from 0.03 to 0.11 μmol/L (<0.1 μmol/L at 72 h after MTX administration). The ABCB1 genotypes AA and AG were detected in two different patients. Histopathological findings revealed dyskeratosis of keratinocytes, dermal vasodilation, and inflammatory cell infiltration. Rescue treatment with oral folic acid was administered to three patients, leading to complete healing of all lesions within two weeks. The remaining two patients showed gradual improvement in skin ulcers after discontinuing TCM.ConclusionsTCM containing MTX may induce skin ulceration in rare cases among patients with psoriasis.https://www.frontiersin.org/articles/10.3389/falgy.2025.1634055/fullpsoriasismethotrexate toxicityskin ulcerationtraditional Chineseimmunosuppressive
spellingShingle Yunhong Zheng
Yunhong Zheng
Yinzi Dubai
Ruizhe Wang
Suju Luo
Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series
Frontiers in Allergy
psoriasis
methotrexate toxicity
skin ulceration
traditional Chinese
immunosuppressive
title Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series
title_full Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series
title_fullStr Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series
title_full_unstemmed Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series
title_short Painful skin ulcers in psoriasis patients after taking methotrexate-containing traditional Chinese medicine: a retrospective case series
title_sort painful skin ulcers in psoriasis patients after taking methotrexate containing traditional chinese medicine a retrospective case series
topic psoriasis
methotrexate toxicity
skin ulceration
traditional Chinese
immunosuppressive
url https://www.frontiersin.org/articles/10.3389/falgy.2025.1634055/full
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