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.
Largest City-Philadelphia. Area - 46,058 square miles [Pennsylvania is the 33rd biggest state in the USA]. Population - 12,773,801 (as of 2013) [Pennsylvania is the sixth most populous state in the USA, after California, New York, Texas, Florida and Illinois ].