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Hyphal production by Pityrosporum ovale
International Journal of Dermatology
|January 1, 1978
Summary
Pityrosporum ovale, in its hyphal form, was identified in patients with scalp and skin lesions. This yeast may cause a clinical form of tinea versicolor on seborrheic skin areas.
Area of Science:
- Dermatology
- Mycology
- Microbiology
Background:
- Pityrosporum ovale is a common yeast found on human skin.
- The role of P. ovale in skin conditions is not fully understood.
- The mycelial (hyphal) form of P. ovale is less commonly observed than its yeast form.
Purpose of the Study:
- To investigate the presence and potential role of Pityrosporum ovale in its hyphal form in patients with specific skin lesions.
- To explore the association between P. ovale and clinical presentations resembling tinea versicolor.
Main Methods:
- Microscopic examination of skin lesion samples from patients.
- Identification of Pityrosporum ovale and its morphological form (yeast vs. hyphae).
- Clinical correlation of findings with skin conditions.
Main Results:
- Pityrosporum ovale with abundant hyphae was detected in 8 patients.
- Lesions were located on the scalp and glabrous (smooth) skin.
- The observed clinical presentation was consistent with seborrheic dermatitis or a tinea versicolor-like condition.
Conclusions:
- Pityrosporum ovale in its mycelial form can induce skin lesions.
- These lesions commonly occur on seborrheic areas.
- The findings suggest a potential etiological link between P. ovale hyphae and a clinical form of tinea versicolor.
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