These disorders are based on dermatitis in the groin area. Chronic dermatitis of the extremities. Bacterial skin disease accompanied by redness between the folds of the skin. Balanitis. herpes zoster Dermatitis accompanied by eczema. Contact dermatitis. cystic dermatitis; Sweat retention. Tracing inflammation at the edge of the nail. anal itching Seborrheic eczema. Scratching between the folds of the skin. seborrheic dermatitis Pustular acne. Ulcerative dermatitis. neurodermatitis Mouth infection. Dermatitis due to photosensitivity. Skin fungi in the groin area. Tinea infections such as tinea pedis, tinea pedis, and tinea corporis.