​Dermatology - Tinea Cruris

​Dermatology - Tinea Cruris 

A particular class of fungus known as dermatiophytes is responsible for the infection of keratinized cutaneous tissues that causes tinea; arthrospores from these species can live for up to a year in skin scales.
The most prevalent ways for transmission are from person to person, from animals, and, less frequently, via soil. Tinea cruris is a subacute or chronic dermatophytosis that affects the pubic and inguinal regions, as well as the upper thigh. It is nearly invariably linked to tinea pedis.


Erythematous macules of approximately 3-5 mm and either scaling or not combine to create big, well-defined, dull red, tan, or brown plaques with a central clearing. Dermatophytic folliculitis and pustules and papules may be seen at the edges. Lichen simplex chronicus subsequent alterations may result from persistent scratching. Seldom are the penis and scrotum implicated.

Fungal hyphae can be seen by direct microscopy of skin scrapings that have been taken using a no. 15 scalpel blade, the edge of a glass microscope slide, or a toothbrush (cervical or tooth brush) and covered with a drop of potassium hydroxide (KOH). Erythasma, candida intertrigo, intertriginous psoriasis, tinea, or pityriasis versicolor are among the conditions included in the differential.


Use imidazole powder, benzoyl peroxide wash, and dry skin to stop recurrences. If dermatophytic nail infection is present, make careful to treat it.
Subject-specific
Use allylamine lotion (naftifin, terbinafine); naphthionate ointment (tolnaftate); imidazole creams (clotrimazole, miconazole, ketoconazole, econazole, oxiconizole, sudonizole, sertaconazole); or substituted pyridine (ciclopirox olamine).
            Among oral antidermophytic agents, Systemic Terbinafine 250-mg tablet is the most effective allylamine. Fluconazole 100-, 150-, and 200-mg pills or oral suspension (10 or 40 mg/mL) are substitutes for itraconazole 100-mg capsules or oral solution (10 mg/mL).