Polat Muhterem, İlhan Mustafa N
J Am Podiatr Med Assoc. 2015 Mar;105(2):121-4. doi: 10.7547/0003-0538-105.2.121.
Erythrasma is a superficial skin infection caused by Corynebacterium minutissimum . Interdigital erythrasma is the most common form and is easily confused with tinea pedis. The aim of this study was to determine the prevalence of interdigital erythrasma in patients with clinically suspected tinea pedis.
This study was performed between January 1, 2011, and January 31, 2012. It included 182 patients who presented with concerns about interdigital lesions. All of the patients were examined with a Wood's lamp, and smears were stained with Gram's method. Direct examination with 20% potassium hydroxide was performed.
Of 182 patients with interdigital lesions, 73 (40.1%) were diagnosed as having erythrasma. The mean ± SD age of the patients with erythrasma was 45.52 ± 10.83 years (range, 22-70 years). Most of the patients with erythrasma were women (56.2%). The most often clinical finding was desquamation. Using only Wood's lamp examination or Gram's staining resulted in 31 (42.5%) or 14 (19.2%) positive patients, respectively. Using Wood's lamp examination and Gram's staining concurrently resulted in 28 positive patients (38.4%).
Interdigital erythrasma is a common condition and can be difficult to differentiate from tinea pedis. Simple and rapid diagnosis can be made with Wood's lamp examination, but Gram's staining is also a useful method, especially in patients with negative Wood's lamp examination findings.
红癣是由纤细棒状杆菌引起的一种浅表皮肤感染。指间红癣是最常见的类型，容易与足癣相混淆。本研究的目的是确定临床疑似足癣患者中指间红癣的患病率。
本研究于2011年1月1日至2012年1月31日进行。纳入了182例对指间病变表示担忧的患者。所有患者均用伍德灯检查，涂片采用革兰氏染色法。进行20%氢氧化钾直接检查。
在182例指间病变患者中，73例（40.1%）被诊断为患有红癣。红癣患者的平均年龄±标准差为45.52±10.83岁（范围22 - 70岁）。大多数红癣患者为女性（56.2%）。最常见的临床发现是脱屑。仅使用伍德灯检查或革兰氏染色时，分别有31例（42.5%）或14例（19.2%）患者呈阳性。同时使用伍德灯检查和革兰氏染色时有28例阳性患者（38.4%）。
指间红癣是一种常见病症，可能难以与足癣相鉴别。伍德灯检查可进行简单快速的诊断，但革兰氏染色也是一种有用的方法，尤其是在伍德灯检查结果为阴性的患者中。
