A child’s headache several hours after falling and hitting the back of the head in the shower may be due to localized injury, subcutaneous hematoma, intracranial hematoma and other causes. 1. Local injury: As the child falls and hits the ground, it may lead to localized skin tissue injury at the back of the head and cause pain a few hours later. 2. Subcutaneous hematoma: A child’s fall on the back of the head can lead to damage to blood vessels and cause bleeding, which can result in a lump on the back of the head and a headache a few hours later. 3. Intracranial hematoma: If the child has a headache and dizziness a few hours after the fall, and the symptoms are persistently aggravated, intracranial hemorrhage cannot be excluded. The child fell in the shower knocked on the back of the head a few hours after shouting headache, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause, give targeted treatment or treatment.