Cerebral Palsy: This condition is characterized by a group of permanent disorders appearing in early childhood, affecting movement, muscle tone, and posture. Drooling and difficulties with balance or walking, leading to falls, are common symptoms. The combination of motor impairment and developmental delays makes cerebral palsy a leading consideration.

Muscular Dystrophy: A group of inherited disorders characterized by muscle weakness and loss of muscle mass. Children with muscular dystrophy may experience difficulty walking and maintaining balance, leading to falls. Drooling can be associated with certain types due to facial muscle weakness.
Developmental Delay: A broad term that describes when a child does not reach developmental milestones within the expected timeframes. This can include delays in gross motor skills, such as walking, which could lead to increased falling. Drooling can be seen in children with oral motor delays.
Autism Spectrum Disorder (ASD): While primarily known for its effects on social interaction and communication, some children with ASD may also exhibit motor clumsiness and have difficulties with sensory integration, which could manifest as drooling and an increased risk of falls.

Brain Tumor: Although less common, a brain tumor can cause increased intracranial pressure, leading to ataxia (loss of coordination), which might result in falling. Drooling could be a sign of increased pressure or direct involvement of cranial nerves.
Meningitis or Encephalitis: Infections of the meninges or brain can present with a wide range of symptoms, including ataxia, altered mental status, and potentially drooling due to neurological impairment. These conditions are medical emergencies.
Toxic Ingestion: Accidental ingestion of toxins can lead to neurological symptoms, including ataxia and altered mental status, potentially causing drooling and falling.

Biotinidase Deficiency: A rare genetic disorder that can lead to neurological symptoms, including ataxia and developmental delays, if left untreated. Drooling could be a part of the broader spectrum of symptoms related to neurological impairment.
Ataxia-Telangiectasia: A rare, inherited disorder affecting the nervous system, immune system, and other bodily systems. It is characterized by difficulty with coordination and balance (ataxia) and telangiectasias, and could potentially include drooling among its symptoms due to the progressive nature of the disease.
Rett Syndrome: A rare genetic disorder that affects brain development, leading to severe mental and physical disability. It mostly affects girls and can include symptoms like loss of coordination and balance, potentially leading to falls, though drooling is not a primary symptom.