Mycosis of the feet- The affected area is a space which is covered by a shoe for example a moccasin (where the term comes from): Soles, heels, toes and toenails. The fungus probably spread itself, starting from the patient's feet, the toenails, over the groins to the belly.
Detailed view: http://pictures.doccheck.com/en/photos/483/19933/tinea-cruris-detailed-view/
Further locations:
Feet: http://pictures.doccheck.com/en/photos/483/19928/Belly: http://pictures.doccheck.com/en/photos/483/19930/tinea-cruris/http://pictures.doccheck.com/en/photos/483/19931/tinea-cruris-detailed-view/