Muscle contractions or twitching within a muscle group powered by a single motor nerve fiber cause a twitch within the left thumb, according to MedlinePlus. Autoimmune disorders, exercise, stress, nutrient deficiencies, a lack of sleep and side effects of medication can cause twitching.Continue Reading
Twitching in the left thumb may also indicate an overdose of caffeine, stimulants or amphetamines or a drug side effect to estrogen, corticosteroids or diuretics, adds MedlinePlus. Diet is also a cause of left thumb twitching, especially when an individual fails to consume a balanced diet. When the body is unable to fight off ailments, such as an autoimmune disorder, twitching is often a side effect. In addition, medical conditions that prompt metabolic disorders, such as kidney disease, uremia and low potassium, may cause twitching in various parts of the body, including the thumbs.
Nervous system disorders and serious diseases, such as Lou Gehrig's disease and spinal muscular atrophy, often promote twitching within the body. Twitching is also a symptom of weak muscles, also known as myopathy, and damage to nerves that lead to muscles, according to MedlinePlus. In severe cases, a seizure may cause twitching in the left thumb; however, the twitching and shaking is not just isolated to the hands when a seizure occurs, states Healthline.Learn more about Pain & Symptoms
A slight tremor of the finger, thumb or hand is one of the typical early warning symptoms of Parkinson’s disease, according to National Parkinson Foundation. Other signs include a twitching chin or lip, a trembling leg, difficulty in sleeping and moving, and constipation.Full Answer >
One cause of a lump in the wrist is arthritis at the base of the thumb, explains UConn Health. Moderate to severe pain and weakness in the grip also accompanies hand and wrist arthritis. Another common cause of a lump in the wrist below the thumb is a ganglion cyst, according to WebMD. It is uncertain what causes ganglion cysts, but theories include trauma to the area or a flaw in the joint capsule that allows joint tissue to escape.Full Answer >
One cause of pain in the left ovary before a period is ovulation, according to Mayo Clinic. However, other explanations for ovarian pain include cysts, tumors, endometriosis, pelvic inflammatory disease and ovarian remnant syndrome, WebMD highlights.Full Answer >
Some cause of muscle spasms are overuse or exercise of muscles on the left side, dehydration and atherosclerosis, according to MedicineNet. Nervous system disorders such as amyotrophic lateral sclerosis, multiple sclerosis and spinal cord injuries might be a cause of muscle spasms in various parts of the body. Hemifacial spasms are a specific type of spasm that occurs in the face and most often on the left side, notes the Dystonia Society.Full Answer >