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Clinical features of shiitake dermatitis: a systematic review
Austin H Nguyen1, Maria I Gonzaga2, Victoria M Lim1
1Creighton University School of Medicine, Omaha, NE, USA.
International Journal of Dermatology
|January 6, 2017
Summary
Shiitake dermatitis, a rash from shiitake mushrooms, typically presents as linear lesions and itching. This condition is usually self-limiting, resolving within two weeks without specific medical intervention.
Area of Science:
- Dermatology
- Toxicology
- Mycology
Background:
- Shiitake dermatitis is a rare skin reaction caused by lentinan, a polysaccharide found in shiitake mushrooms (Lentinula edodes).
- It primarily affects individuals after consuming raw or undercooked mushrooms.
Purpose of the Study:
- To systematically review the English-language literature on shiitake dermatitis.
- To summarize the clinical presentation, diagnosis, and management of this condition.
Main Methods:
- Systematic review of case reports and case series.
- Analysis of 50 documented cases of shiitake dermatitis.
Main Results:
- The majority of cases (98%) presented with linear flagellated dermatitis and pruritus (78%).
- Common systemic findings included fever, diarrhea, and mucosal ulcers.
- Diagnosis relies on clinical presentation; skin biopsies and tests are nonspecific.
- The condition is self-limiting, resolving in about 12.5 days.
Conclusions:
- Shiitake dermatitis is a distinct clinical entity diagnosed primarily by its characteristic rash.
- While self-limiting, symptomatic treatment and avoidance of re-exposure are recommended.
- Medical treatment may offer a slight reduction in duration but is not essential.
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