lihasvärinad

Lihasvärinät, also known as muscle fasciculations, are involuntary, brief, and visible twitches of muscle fibers. These are typically perceived as small, flickering movements under the skin. Fasciculations can occur in any voluntary muscle but are most commonly observed in the eyelids, face, arms, and legs. They are a common phenomenon and can be caused by a variety of factors, most of which are benign.

Common triggers for lihasvärinät include stress, anxiety, fatigue, and excessive consumption of caffeine or other stimulants. Dehydration and electrolyte imbalances, such as low levels of potassium or magnesium, can also contribute. Certain medications, particularly stimulants and some antidepressants, may cause or exacerbate fasciculations. In some cases, repetitive muscle strain from exercise or physical activity can lead to temporary muscle twitches.

While most lihasvärinät are harmless and transient, persistent or widespread fasciculations, especially when accompanied by other neurological symptoms like muscle weakness, atrophy, or cramping, can be indicative of underlying neurological conditions. These can include conditions affecting motor neurons, such as amyotrophic lateral sclerosis (ALS) or spinal muscular atrophy (SMA), as well as nerve compression syndromes. A thorough medical evaluation by a healthcare professional is recommended if fasciculations are concerning or persistent to rule out any serious causes. Diagnosis often involves a physical examination, a review of medical history, and potentially further tests such as electromyography (EMG) to assess muscle and nerve activity.