Dermatophytoses: Tinea Cruris

Question 1

Tinea Cruris synonym

Answer 1

(“Jock Itch”)

Question 2

Tinea Cruris lesion

Answer 2

Scaly patch/plaque with a well-defined, curved border
and central clearing
Pruritic, erythematous, dry/macerated

Question 3

Tinea Cruris sites

Answer 3

Sites: starts medial thigh, spreads centrifugally to

perineum, gluteal cleft, buttocks

Question 4

Tinea Cruris Differential Diagnosis

Answer 4

Candidiasis (involvement
of scrotum and satellite
lesions), contact
dermatitis, erythrasma

Question 5

Tinea Cruris Investigations

Answer 5

Same as for tinea corporis

Microscopic examinations
of KOH prep of scales shows
hyphae
Culture of scales

Question 6

Tinea Cruris management

Answer 6

Same as for tinea corporis

Topicals: 1% clotrimazole, 2%
ketoconazole
2% miconazole, terbinafine or
ciclopirox olamine cream bid for
2-4 wk
Oral terbinafine, or itraconazole,
or fluconazole, or ketoconazole if
extensive