Nervous system conditions that can cause muscle twitching include: 1  Amyotrophic lateral sclerosis (ALS-Lou Gehrig's disease). 2  Neuropathy or damage to the nerve that leads to a muscle. 3  Spinal muscular atrophy. 4  Weak muscles (myopathy).
Confidence votes 1.6K. Philadelphia is a city located in the state of Pennsylvania. On the north eastern side of the United States of America.In Pennslyvania.oston is in Massachusetts, Philadelphia is in Pennsylvania, and New York City is in New York State.
Demographics of Philadelphia. Main article: Demographics of Philadelphia. As of the 2010 United States Census, there were 1,526,006 people, 590,071 households, and 352,272 families residing in the consolidated city-county of Philadelphia, Pennsylvania. The population density was 4,337.3/kmÂ² (11,233.6/miÂ²).