KOH Exam: A Simple Tool for Fungal Skin Infection Diagnosis
A KOH examination, a simple and low-risk procedure, is often used to diagnose fungal skin infections. When a fungal infection is suspected, such as ringworm or jock itch, a small sample of skin is taken from the lesion. This test can help identify common fungal infections like brittle nails, itchy skin, thrush, or yeast infections.
The test involves scraping skin from the lesion and mixing it with potassium hydroxide (KOH), a mixture of potassium, oxygen, and hydrogen. KOH destroys healthy cells, leaving fungal cells for examination. If fungal cells are present, treatment for the infection will be started by the doctor. Normal results show no fungi present, while abnormal results indicate a possible fungal infection.
Over-the-counter antifungal products are available for treating superficial fungal infections. Common antifungals include clotrimazole, miconazole, tolnaftate, and terbinafine. However, if the infection is severe or resistant, prescription antifungals may be necessary. In some cases, natural methods like plant-based sprays or biological controls can also be used to treat fungal infections.
A KOH examination is a crucial tool in diagnosing and treating fungal skin infections. It helps doctors identify the presence of fungi and start appropriate treatment. While the test may cause light bleeding where the skin was scraped, it is generally a low-risk procedure. If you suspect a fungal infection, consult a healthcare professional for a KOH examination.
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