Here are some disorders, injuriesand diseases of the muscles :1. CRAMPS - involve sudden and violentmuscle contractions. A person mayexperience painful cramps of certainskeletal muscles or smooth muscles. a.) HEAT CRAMPS - commonly develop when oneworks or does physical activity in theheat.
b. Stomach/intestinal cramps - cramps may alsodevelop in the internal organswhich are made of smoothmuscles. The stomach orintestine may suddenly andpainfully contract. This may bedue to poor eating habits orfrom chilling the stomach.
2. Muscle Soreness/Muscle Strain - Hard muscular work may causeskeletal muscles to become sore. Insevere cases, the soreness may last upto four days. The muscle soreness maybe due to the damage in the muscle andconnective tissues. Such damage may bethe result of exerting too much force orresistance. It may also be the result ofovertaining and improper technique inpracticing sports.
3. Muscle Diseases/Disorders Two major classes of muscle diseasesthat affect the skeletal muscles aremuscular atrophy and musculardystrophy. a. Atrophy diseases and damage thebrain or nerves that stimulate muscles. b. Muscular dystrophy is a seriousdisease that directly affects muscles. Itweakens the skeletal muscles.
1. Duchenne muscular dystrophyis the most common and most rapidlyprogressive childhood muscle disease.It usually affects only boys . The firstsign of the disease is difficulty inwalking from 2 to 6 years old. Later,the child falls frequently and cannotrun. Walking and standing becomemore difficult At adolescence awheelchair is needed. The diseaseeventually affects most muscles of thebody.
22. Amyotrophic lateral sclerosis orALS is a rare incurable and painlessdisease of the nervous system. ALSdevelops when certain motor neurons inthe brain and spinal column break downand die. As the motor neurons breakdown or die, they send irregular impulsesto the muscles. Small muscles twitchesoccur. The arms and legs becomeincreasingly weak and the patient hastrouble in walking and in using thehands. Finally, the patient becomesparalyzed and dies.
Poliomyelitis Poliomyelitis also called POLIO orinfantile paralysis. It is a seriousinfection caused by a virus thatmay enter the mouth or nose. Ittravels to the intestines and into ablood. When the virus reaches anerve cell, it multiplies rapidly andinvade many nerve cells.