Torticollis: This condition, characterized by a twisted neck, is common in infants and can cause the head to tilt to one side. It often results from a birth injury or can be congenital, and it's frequently seen in this age group.

Otitis Media: Middle ear infections can cause discomfort, leading to head tilting as a way to alleviate pain. This is a common issue in infants and toddlers.
Refractive Errors or Vision Problems: Infants may tilt their heads to compensate for vision problems, such as strabismus or significant refractive errors, to achieve better vision.
Muscular Imbalance: Other muscular imbalances or conditions affecting the neck muscles can lead to head tilting.

Retinoblastoma: Although rare, this eye cancer can cause a child to tilt their head to avoid double vision or to see around a visual field defect. Early detection is crucial.
Hydrocephalus or Brain Tumors: Increased intracranial pressure or space-occupying lesions can lead to symptoms including head tilting, among others like vomiting, lethargy, and increased head circumference.
Infections like Meningitis: Severe infections can cause neck stiffness and tilting as part of the symptomatology.

Klippel-Feil Syndrome: A rare congenital condition characterized by the fusion of any two of the seven cervical vertebrae, which can lead to a limited range of motion of the neck and head tilting.
Congenital Muscular Dystrophy: A group of muscle disorders (dystrophies) that appear at birth and can lead to muscle weakness and, potentially, head tilting due to muscular imbalance.
Sandifer Syndrome: A rare condition associated with gastroesophageal reflux disease (GERD), where infants exhibit dystonic body movements, including head tilting, in response to reflux episodes.