Eczema (Atopic Dermatitis): This is a common condition in pediatric patients characterized by dry, itchy skin. The penis, including the sides of the shaft, can be affected, especially if the child has a history of atopic dermatitis or allergies.

Irritant Contact Dermatitis: This condition occurs due to exposure to irritants such as soaps, detergents, or other substances that can cause dryness and irritation on the skin of the penis.
Seborrheic Dermatitis: Although more common on the scalp, face, and torso, seborrheic dermatitis can also affect the genital area, leading to dry, flaky skin.
Psoriasis: While less common in the genital area, psoriasis can cause dry, scaly patches on the penis, including the sides of the shaft.

Lichen Sclerosus: A chronic inflammatory skin condition that can affect the genital and anal areas, leading to thinning and dryness of the skin. It's crucial to diagnose and treat to prevent long-term complications.
Sexually Transmitted Infections (STIs): Although less likely in pediatric patients without a history of sexual activity, certain STIs like syphilis can cause skin lesions or rashes on the genitals.
Balanitis: Inflammation of the glans penis, which can sometimes extend to the shaft, often due to poor hygiene, infections, or irritants.

Keratosis Pilaris: A condition characterized by small, rough patches on the skin, which can occasionally affect the genital area, including the penis.
Darier Disease: A rare genetic disorder that affects the skin, sometimes causing dry, crusty patches in the genital area among other symptoms.
Nutritional Deficiencies: Certain deficiencies, such as vitamin D or zinc deficiency, can lead to skin problems, including dry skin, though this would be part of a broader clinical picture.