Table 1.

Causes of fasciculations.

Fasciculationss in healthy subjects	Coffee; exhaustive physical activity/fatigue; stress; cramp syndrome and benign fasciculations
Fasciculations associated with movement disorders	Espino-cerebell,ar degeneration-type 3; espino-cerebellar degeneration-type 36; parkinsonisms (multiple system atrophy, ALS-plus syndromes)
Motor neuron diseases	Amyotrophic lateral sclerosis; progressive spinal muscular atrophies; benign monomelic amyotrophy; Post-polio syndrome; Kennedy disease
Systemic diseases	Hipertiteoidism; syndrome of inappropriate secretion of thyrotropin (Ohba); hypophosphatemia, calcium disorders secondary to hyperparathyroidism
Drugs and/or intoxications by heavy metals pollutants	Neostigmine; corticosteroids; succinylcholine; elemental mercury intoxication; association of lithium and nortriptyline; flunarizine; isoniazid

ALS, amyotrophic lateral sclerosis.