Eczema/Dermatitis: This is a common condition in children that can cause itchiness in the genital area, including the penis. The skin may appear red, dry, and irritated.

Contact Dermatitis: This could be due to an allergic reaction or irritation from soaps, detergents, or other substances that come into contact with the penis.
Jock Itch (Tinea Cruris): A fungal infection that can cause itching and a rash in the groin area, including the penis.
Pinworms: These are small worms that can infect the intestines and cause intense itching around the anus and, less commonly, the genital area.
Allergic Reaction: An allergic reaction to certain foods, substances, or products can cause itching and skin irritation on the penis.

Sexual Abuse: Although rare and unfortunate, it's crucial for healthcare providers to consider the possibility of sexual abuse in cases of genital itching or irritation in children, as it can have severe psychological and physical consequences.
Urinary Tract Infection (UTI): UTIs can cause discomfort and itching in the genital area, including the penis, and can lead to more serious complications if not treated promptly.
Balanitis: An inflammation of the glans (head) of the penis, which can be caused by infection or poor hygiene, and requires proper treatment to prevent complications.

Psoriasis: An autoimmune condition that can cause skin cells to build up and form scales and itchy patches on the penis, though it's less common in young children.
Lichen Sclerosus: A rare condition that creates patchy, white skin that's thinner than normal, and can cause itching and discomfort on the penis.
Kawasaki Disease: A rare condition that mainly affects children under the age of 5, causing inflammation in the walls of medium-sized arteries throughout the body, and can sometimes present with genital symptoms among others.