Bulbar motor neuron disease, sometimes called bulbar onset motor neuron disease or bulbar ALS (amyotrophic lateral sclerosis), is a devastating neurodegenerative disorder primarily targeting the motor neurons within the brainstem’s bulbar region. ¹ The motor cortex’s higher groups and the brain stem and spinal cord’s lower groups are the two categories into which motor neurons can be separated. ² Lower motor neuron loss causes muscle atrophy, cramping, and weakness. Rapid responses and functional limitations result from the loss of higher motor neurons. ³ MND encompass a range of disorders that impact the voluntary motor system, which involves components such as frontal cortex motor neurons, anterior horn cells, cranial motor nerve nuclei, and the corticospinal and corticobulbar tracts. These conditions can have variable effects on this essential neural network, depending on the specific type of MND. MND can either be acquired or inherited. In adults, the most common MND is Amyotrophic Lateral Sclerosis (ALS), which can manifest spontaneously or be inherited and affects both upper motor neurons (UMN) and lower motor neurons (LMN). Meanwhile, in children, the prevalent MND is spinal muscular atrophy (SMA), a condition driven by genetic factors leading to the degeneration of LMNs. ⁴

Motor neuron diseases like ALS are marked by the gradual deterioration and depletion of motor neurons, the nerve cells that govern voluntary muscle actions. ¹ Motor neuron disease often affects middle-aged and elderly people and first manifests in the 6 ^th and 7 ^th decades of life. Familial motor neurone disease, which makes up around 5% of cases, is more frequently encountered in younger age groups. ⁵ The exact cause of this condition remains elusive, but it is believed to arise from a complex interplay of genetic and environmental factors. Numerous genetic mutations, including those in the C9 or f72 gene, SOD1 gene, and other genes, have been identified as contributing to the aetiology of the illness. ⁶

Slurred speech [dysarthria], trouble swallowing [dysphagia], and weakness or muscular atrophy in the face muscles, tongue, and throat are the characteristic signs of bulbar motor neuron disease. It can eventually result in severe impairment and, in most cases, respiratory failure, the main cause of death in ALS patients, as the illness advances and affects the limbs and other muscle groups. ⁷ A thorough clinical evaluation, electromyography [EMG], nerve conduction investigations, and frequent genetic testing to find suspected causal mutations are commonly used to diagnose bulbar motor neuron illness. ⁸

The physiotherapy management of Bulbar Motor Neuron Disease [MND] presents unique challenges due to this neurodegenerative condition’s progressive and debilitating nature. Despite extensive study, how amyotrophic lateral sclerosis is currently treated, from diagnosis to prognosis, is still not optimal. ⁹ Motor neuron diseases (MND), including the bulbar variant, encompass the degeneration of both upper and lower motor neurons, leading to muscle weakness, spasticity, and eventual paralysis. In the case of bulbar MND, these manifestations primarily impact the muscles responsible for speech, swallowing, and facial mobility. ⁹

The presented case report focuses on the clinical presentation and management of an 85-year-old male with symptoms indicative of bulbar motor neuron disease [MND], a specific form of amyotrophic lateral sclerosis [ALS]. This case is of particular significance as it underscores the challenges and complexities associated with the diagnosis and management of bulbar MND, which primarily affects the upper and lower motor neurons controlling muscles in the brainstem’s bulbar region, resulting in characteristic symptoms such as dysarthria, dysphagia, and muscle weakness. ¹

This patient’s clinical presentation included left-sided weakness, difficulty in swallowing, and impaired speech articulation, all of which align with the typical symptoms of bulbar MND. These symptoms and the patient’s history of aphasia and known hypertension raised strong suspicions of this neurodegenerative condition ( Figure 2). ⁷

The management of bulbar MND is multi-faceted and necessitates a comprehensive approach to address the myriad symptoms and difficulties patients encounter. In the case of dysphagia, various interventions were employed, including compensation therapy, swallowing function training, physiotherapy, alternative therapies, bolus modification, behavioral adjustments, oromotor exercises, postural adjustments, swallowing manoeuvres, and sensory and neurophysiologic stimulation. These interventions aim to enhance the safety and comfort of swallowing, thereby preventing aspiration and improving overall quality of life. ¹³

Bulbar MND leads to the progressive loss of upper and lower motor neurons, resulting in muscle weakness and atrophy. Physiotherapy interventions, such as targeted exercises and strength training, are crucial in preserving muscle function and delaying the onset of muscle wasting. These exercises help stimulate the remaining motor neurons and maintain muscle strength, essential for mobility and daily activities. ¹⁴ Muscle weakness and immobility can lead to joint contractures and pain. Physiotherapists help prevent contractures by employing stretching exercises and ensuring proper positioning to maintain joint mobility. ¹⁵ Staying active and engaging in physiotherapy can boost mood, combat depression and anxiety, and enhance social interaction, which are crucial aspects of living well with MND. ¹⁶

As muscle weakness advances in MND, individuals may face mobility and daily activities challenges. Physiotherapists work on improving mobility through gait training, balance exercises, and mobility aids to enhance functional independence. Additionally, they can offer guidance on adaptive equipment, such as wheelchairs or walkers, to facilitate safe and efficient movement. ⁸

In summary, this case report provides a comprehensive overview of the challenges presented by Bulbar MND, emphasizing the need for a multidisciplinary approach to address the wide array of symptoms and difficulties patients encounter.

Written informed consent has been obtained from the patient.