There are an estimated 30,000 mountain lions in the western United States. One mountain lion subspecies, the Florida panther, is critically endangered with a population of less than 100 individuals.
Causes of muscle twitching include: 1  Pregnancy. 2  Stress or anxiety. 3  Excessive caffeine. 4  Hypothyroidism. 5  Bug bites or stings. 6  Mono. 7  Parkinson's Disease. 8  Side-effects of certain drugs or medication (such as diuretics, corticosteroids, or estrogens).9  Dehydration.hese twitches often go unnoticed, and when you do feel them, they tend to feel worse and more noticeable than they actually are. Twitches, also known as fasciculations, can occur in the arms, feet, fingers, hands, head, legs, stomach, and other parts of the body.
However, long-term fatigue and other CFS symptoms can be signs of more serious medical or psychological problems. It is important to rule out other conditions that can cause these symptoms by performing a careful evaluation and laboratory tests. Infectious Mononucleosis and Epstein-Barr Virus. Infectious mononucleosis causes fatigue and swollen glands. It primarily affects adolescents and young adults. Research finds that fatigue may last for a year or more in a small percentage of adolescents who have had mononucleosis. Females and people with more severe fatigue are more likely to develop chronic fatigue syndrome after mononucleosis. Blood tests can detect the Epstein-Barr virus (EBV), which causes mononucleosis. Autoimmune Diseases. Some diseases, including systemic lupus erythematosus, multiple sclerosis, and rheumatoid arthritis are caused by autoimmunity, a condition in which the person's immune system attacks the body's own tissues.