Tinea Pedis - A Clinico-Mycological Study.

Priya, B T (2010) Tinea Pedis - A Clinico-Mycological Study. Masters thesis, Madras Medical College, Chennai.


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INTRODUCTION Dermatophytosis is the superficial fungal infection of keratinized tissues caused by dermatophytes. They are a group of taxonomically related fungi that utilize keratin as a source of nutrients. Tinea pedis is a common superficial dermatophyte infection of the feet. It may present in several clinical varieties such as intertriginous, hyperkeratotic , vesiculobullous, ulcerative or a combination of these. It is often referred to as “Athlete’s Foot”. Tinea pedis may be accompanied by dermatophyte infection of other parts of the body including groin, hands or nails. It is estimated to affect about 15% of the population at large, being more common in closed communities such as army barracks and boarding schools, in warm weather, among those frequently using swimming pools, and when the feet are occluded with nonporous tight fitting shoes. In the west, tinea pedis is estimated to be present in about 40% of all patients who attend clinics for any medical concern. Those patients with more severe symptoms seek medical help and often have concomitant fungal infection of the toenails. There are many undiagnosed cases, many of which may be asymptomatic and unsuspecting of having tinea pedis [2] and be a possible source of infection for others. Chronic infection is common in patients with concomitant diabetes, atopy, and immunosuppression. In an increasingly ageing population and with the increasing numbers of immune compromised patients, tinea pedis is emerging as an important and a significantly prevalent infection. AIM OF THE STUDY : 1] To find the predominant etiological agent of tinea pedis among the patients studied. 2] To find the incidence of disease in relation to sex, age group and occupation. 3] To account for the varied clinical presentations. 4] To find the precipitating or aggravating factors of the condition. 5] To know other conditions of foot associated with tinea pedis. 6] To find out if there is any significant association with blood group and the occurrence of tinea pedis. CONCLUSION : Prevalence of tinea pedis infection was more common among males with male: female ratio of 2.26:1. The 21- 30 years age group was commonly affected by tinea pedis. The mean age was 28.8 years. Shoe wearing habit has been encountered among 30.6% of patients. Most of them were school or college students and policemen who have to wear shoes compulsorily. More incidence of bilateral involvement and recurrent episodes were noted among the shoe wearing population than in the non shoe wearing population Bilateral involvement was seen in 9.3% and hyperhidrosis was associated among 14.6% patients. Any patients diagnosed with tinea pedis should be screened for diabetes as implied by the outcome of the study. Among the 12 patients who were associated with diabetes 5 were newly diagnosed patients after our investigation. The blood group distribution in our study showed 37.3% of patients belonging to blood group O +ve. The distribution of blood groups reflected the general distribution pattern of the population. Intertriginous type of tinea pedis was the most common type observed in this study in 36 patients. 3rd web space was the most commonly affected with involvement seen in 15 patients. 4 patients had extensive dermatophytosis and ide eruption was observed in 2 patients. Among other dermatophyte infections observed in the patients with tinea pedis, tinea unguium was the most commonly associated problem in our study with 11 patients (14.6%). Infected toe nails may be the site of primary infection and fungal disease can spread to other body areas from these primary sites. Other foot abnormalities observed were crowding of toes, traumatic fissures, keratolysis punctata, corn foot and plantar wart. Culture positivity was recorded in 81.3% (61 cases) of cases studied. Trichophyton rubrum happened to be the chief isolate. Among the 61 culture positive specimens Trichophyton rubrum was isolated in 47 cases. Trichophyton mentagrophytes was isolated from the rest of the tinea pedis patients. Trichophyton rubrum was isolated more commonly from the dry squamous or hyperkeratotic lesions of tinea pedis and Trichophyton mentagrophytes was isolated from wet vesicular lesions.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Tinea Pedis ; Clinico Mycological Study.
Subjects: MEDICAL > Dermatology Venereology & Leprosy
Depositing User: Subramani R
Date Deposited: 05 Jul 2017 04:56
Last Modified: 05 Jul 2017 09:11
URI: http://repository-tnmgrmu.ac.in/id/eprint/978

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