Why Do Babies Develop ALS?

Amyotrophic lateral sclerosis (ALS), commonly known as “frozen” or “locked-in” syndrome, is a chronic, progressive neurodegenerative disorder affecting motor neurons. Because it primarily involves the body’s motor system—including motor neurons and motor tracts—patients mainly present with motor impairments, such as muscle weakness and atrophy.

Why Do Infants Develop ALS?

The ALS observed in infants is also termed amyotrophic lateral sclerosis—a subtype of motor neuron disease. Its exact etiology and pathogenic mechanisms remain incompletely understood. Currently, the most widely accepted contributing factors include genetic defects, toxic exposure to harmful substances, and nutritional deficiencies, detailed as follows:

1. Genetic Defects: Most cases are sporadic; however, 5–10% of patients have a familial history. Inheritance is predominantly autosomal dominant. The most common causative gene identified is the copper/zinc superoxide dismutase (SOD1) gene.

2. Toxic Exposure: Some researchers propose that ALS may be associated with metal toxicity or certain elemental deficiencies. This hypothesis stems from observations that some ALS patients have a documented history of aluminum exposure and exhibit elevated aluminum levels in both plasma and cerebrospinal fluid.

3. Nutritional Deficiencies: Studies have found reduced plasma levels of vitamin B1 (thiamine) and thiamine monophosphate in ALS patients, suggesting that nutritional disturbances may contribute to disease onset.

Infantile ALS may result from one or more of the above factors. Although ALS remains an incurable condition to date, clinicians employ various treatment strategies tailored to each patient’s specific clinical presentation, aiming to improve quality of life.

We hope the above information is helpful. Wishing you a happy and healthy life!