A mild cough and ear pain in a child may be indicative of otitis media. It is recommended to check blood routine and CRP levels, take symptomatic anti-inflammatory and pain medication as prescribed by the doctor, and closely monitor the child’s condition. If discomfort is felt, seek further medical examination at the hospital as soon as possible.

A three-year-old’s sudden fever and nosebleed may be caused by allergic rhinitis triggered by a cold. It is recommended for parents to closely monitor their child and maintain a regular routine, keep warm, eat light and soft foods, frequently ventilate the room, and drink plenty of hot water. If symptoms persist or recur, seek medical attention promptly.