World Day against Amyotrophic Lateral Sclerosis
World Day against Amyotrophic Lateral Sclerosis is held on June 21. This event in the third decade of the month June is annual. 
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Amyotrophic Lateral Sclerosis, known as ALS, is a disease characterized by the progressive degeneration of motor nerve cells in the brain and spinal cord, causing irreversible muscle paralysis.
This disease occurs when the motor neurons, which go from the brain to the spinal cord and from there to the muscles throughout the body, die, causing the brain to lose the ability to control muscle movement.
Every July 21, since 1997, the World Day against Amyotrophic Lateral Sclerosis is commemorated, with the aim of calling on governments to improve the health services offered to patients and to encourage increased research into the causes, treatment and cure of this disease. It also seeks to inform and create awareness in the population about this disease. This day is an initiative promoted by patient associations around the world.
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