What are the symptoms of amyotrophic lateral sclerosis (ALS)?

　　Amyotrophic lateral sclerosis (ALS) is a common motor neuron disease, most often caused by acquired (non-hereditary) factors. It typically manifests between ages 30 and 60, and is more prevalent in men than in women. So, what are the clinical manifestations of ALS? Let’s explore them together.

　Manifestations of Amyotrophic Lateral Sclerosis

　　1. Muscle Weakness and Atrophy

　　Muscle weakness and atrophy represent the most characteristic and often initial symptoms of ALS. In most patients, the disease begins in the fingers, resulting in reduced dexterity and restricted movement. Symptoms then progressively spread to the hand and arm, followed by the trunk and facial muscles. However, in a minority of cases, onset occurs in the lower limbs instead.

　　2. Fasciculations

　　Fasciculations—commonly referred to as “muscle twitching” or “muscle jumping”—are a hallmark symptom of ALS. They occur in muscles affected by the disease.

　　3. Bulbar Palsy

　　Bulbar palsy typically appears in the advanced stages of ALS. It usually first involves the tongue muscles, causing tongue atrophy and weak tongue protrusion. As the disease progresses, involvement spreads to pharyngeal, masticatory, and other facial muscles, leading to difficulties with swallowing and drinking.

　　The above outlines the primary manifestations of ALS. The three main symptoms described above constitute the core clinical features; however, additional associated symptoms may also occur—including weight loss, dyspnea, and cardiac arrhythmias—as well as psychological symptoms such as depression and anxiety. Although ALS remains incurable to date, timely and active treatment can significantly slow disease progression. We hope this information has been helpful to you.