Summary. 1  Some knowledge of basic first aid could mean the difference between life and death. 2  Consider doing a first aid course, so that you will be able to manage if someone is injured or becomes ill. 3  CPR is a life-saving skill that everyone should learn. 4  Keep a range of first aid kits handy at home, in the car and at work.
The loss of motor neurons leads to weakness and wasting (atrophy) of muscles used for activities such as crawling, walking, sitting up, and controlling head movement. In severe cases of spinal muscular atrophy, the muscles used for breathing and swallowing are affected.
1 Metabolic disorders â Inherited diseases that affect how much energy is in the muscle can cause muscle spasms and muscle cramps. 2  These metabolic disorders cause particular muscle enzymes to be deficient, resulting in the last of energy available to the muscle. 3  One of these metabolic disorders are McArdleâs disease.