Fainting Spells & No Muscle Weakness: Causes & Reasons

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Patient File

Sex unknown, Age unknown

Reported Symptoms

Fainting Spells, No Muscle Weakness,

Negated

None

Unsure

None

Possible Causes

Peripheral Neuropathy

[…] variety of autonomic symptoms may be present, although certainly the most dramatic and incapacitating is orthostatic hypotension, which causes postural light- headedness, syncope [clevelandclinicmeded.com]

A 55-year-old woman with consanguineous parents developed slowly progressive, asymmetric muscle weakness and atrophy in her forearms, while her ability to walk remained unaffected [ncbi.nlm.nih.gov]

We present a 70-year-old male patient of Greek origin with choreatic movements of the tongue and face, lower limb muscle weakness, peripheral neuropathy, elevated creatinephosphokinase [ncbi.nlm.nih.gov]

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Muscle Strain

The case was considered to have moderate muscle strain, because he had modest muscle weakness with a negative lift-off test. [ncbi.nlm.nih.gov]

[…] or unable to move at all Muscle weakness Muscle spasms (result of scar tissue forming) Uneven or deformed surface of the skin A muscle strain can seem like a minor nuisance [bermanchiropractic.com]

Quadriceps tears are generally caused from sudden overload, muscle fatigue, muscle weakness, an imbalance between quadriceps and hamstring strength, a poor training program [psmgroup.com.au]

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Hyperkalemia

The Brugada syndrome is a genetic disease (mutation of the SCN5A gene) that predisposes to syncope and life-threatening sudden cardiac death. [ncbi.nlm.nih.gov]

Muscle weakness Other names Myasthenia Specialty Neurology Muscle weakness is a lack of muscle strength. [en.wikipedia.org]

Argulian E (2009) An unusual case of syncope. Am J Med 122: 636-638. [omicsonline.org]

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Hypokalemia

One patient (a 38-year-old female) had experienced recurrent episodes of syncope due to ventricular tachyarrhythmias (VTAs) accompanied by QT prolongation (QTc: 750ms) when [ncbi.nlm.nih.gov]

Neurological examination showed a lower extremity muscle weakness with three-fifths muscular strength of the quadriceps and tibialis anterior muscle on both sides. [ncbi.nlm.nih.gov]

[…] hypokalemia can be mildly symptomatic, it can be aggravated by diarrhea or vomiting, precipitating prolonged QT interval, increased risk of rhabdomyolysis, cardiac arrhythmia, syncope [ec.bioscientifica.com]

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Graves Disease

An Inquiry Into the Symptoms and Causes of the Syncope Anginosa Commonly Called Angina Pectoris, illustrated by Dissections. Bath, R. [whonamedit.com]

On neurological examination the patient was presented with muscle weakness, muscle atrophy (in face and sternocleidomastoid muscles), features of myotonia and apocamnosis [ncbi.nlm.nih.gov]

Atrial fibrillation, syncope, altered sensorium, heart failure, and weakness are more likely. Symptoms and signs may involve only a single organ system. [msdmanuals.com]

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Gitelman Syndrome

A 26-year-old man was admitted to the hospital due to syncope with general and muscular weakness and muscle cramps. [ncbi.nlm.nih.gov]

The clinical spectrum is wide and usually characterized by chronic fatigue, cramps, muscle weakness and paresthesiae. [ncbi.nlm.nih.gov]

A 18-year-old girl was admitted to our hospital with a history of muscle weakness and transient tetanic episodes affecting bilateral hands. [ncbi.nlm.nih.gov]

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Diabetic Neuropathy

Fainting spells upon standing may indicate postural hypotension. A physician may detect early signs of neuropathy. [joslin.org]

The pain and muscle weakness had persisted more severely in the shoulder than in the thigh throughout the clinical course. [ncbi.nlm.nih.gov]

[…] or dizzy spells caused by blood pressure changes (autonomic neuropathy) Urinary or bowel difficulties (autonomic neuropathy) Impotence or vaginal dryness (autonomic neuropathy [diabetes.about.com]

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Emery-Dreifuss Muscular Dystrophy Type 1

The only symptoms he reported were sporadic dizziness and fatigue during sports activities, but no pre-syncope, syncope or palpitations. [elsevier.pt]

NCI Thesaurus A group of inherited progressive muscle disorders characterized by muscle weakness and eventual death of the muscle tissues. [doctor.am]

If untreated, these abnormalities can lead to a sensation of fluttering or pounding in the chest (palpitations), an unusually slow heartbeat (bradycardia), fainting (syncope [ghr.nlm.nih.gov]

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Addison Disease

spells sores in the mouth cravings for salt nausea vomiting irritability or depression If Addison’s disease goes untreated for too long, it can become an Addisonian crisis [healthline.com]

The physical examination was completely normal except for muscle weakness, hyperpigmentation on labial mucosa and skin in a patient. [ncbi.nlm.nih.gov]

Symptoms & Causes The most common symptoms are fatigue, muscle weakness, loss of appetite, weight loss, and abdominal pain. [niddk.nih.gov]

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Juvenile Primary Lateral Sclerosis

Other signs include clumsiness, muscle weakness and balance difficulties. Patients generally become wheelchair dependent by adolescence. [orpha.net]

Early symptoms include clumsiness, muscle weakness and spasticity in the legs, and difficulty with balance. [ghr.nlm.nih.gov]

[…] sclerosis is a rare disorder characterized by progressive weakness and tightness (spasticity) of muscles in the arms, legs, and face. [malacards.org]

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Guillain-Barré Syndrome

But weakness that increases over several days is also common. Muscle weakness or loss of muscle function (paralysis) affects both sides of the body. [medlineplus.gov]

This leads to nerve inflammation that causes muscle weakness or paralysis and other symptoms. GBS is an autoimmune disorder. [nlm.nih.gov]

A medical exam may show muscle weakness. There may also be problems with blood pressure and heart rate. [medlineplus.gov]

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Danon Disease

Regardless of sex, cardiomyopathy can present as a result of symptoms or congestive heart failure ( CHF ) or an arrhythmia-related event, such as syncope or sudden death. [flipper.diff.org]

INTRODUCTION: Postoperative muscle weakness is a serious complication in surgical intensive care patients. It is mostly described as critical illness polyneuromyopathy. [ncbi.nlm.nih.gov]

At the age of 14 years, he experienced a syncopal episode. [escardio.org]

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Porphyria

Besides having abdominal and nerve pain, the patient may suffer rapid heartbeat, mania, muscle cramps, muscle weakness, breathing problems, hallucinations, and coma. [rxlist.com]

Other symptoms include: Muscle pain Muscle weakness or paralysis Numbness or tingling Pain in the arms or legs Pain in the back Personality changes Attacks can sometimes be [nlm.nih.gov]

Motor neuropathy usually manifests initially as proximal upper-extremity muscle weakness and can be difficult to detect. [web.archive.org]

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Hyponatremia

Patients with hyponatremia often present with changes in mental status or with syncope. [consultant360.com]

A 52-year-old Sri Lankan man presented with anorexia, nausea, fatigue, generalized muscle weakness, and cramps for 1 week. [ncbi.nlm.nih.gov]

weakness, coma, and even seizures! [youtube.com]

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Carnitine Transporter Deficiency

One mother with primary carnitine deficiency was reported to have a history of syncope that worsened during pregnancy, when plasma carnitine levels are physiologically lower [emedicine.com]

Later cases were reported with cardiomyopathy and muscle weakness. [en.wikipedia.org]

Without early detection and treatment, an affected child may experience low blood sugar (hypoglycdemia), seizures, heart muscle weakness (cardiomyopathy) that can be life-threatening [rarediseases.org]

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Alcoholic Neuropathy

Seek immediate medical care for serious symptoms, such as numbness or tingling in your legs or arms, loss of bladder or bowel control, muscle spasms, muscle weakness, and [healthgrades.com]

[…] immobile parts, sensory defects, muscle weakness and cramps, heat intolerance, impotence, dysuria, dysphagia, speech impairment, diarrhoea, constipation. [medical-dictionary.thefreedictionary.com]

Alcoholic Neuropathy Symptoms Numbness in the arms and legs Abnormal sensations; “pins and needles” Painful sensations in the arms and legs Muscle weakness Muscle cramps or [ragingalcoholic.com]

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Carnitine Deficiency

One mother with primary carnitine deficiency was reported to have a history of syncope that worsened during pregnancy, when plasma carnitine levels are physiologically lower [emedicine.medscape.com]

His brother had mild proximal muscle weakness associated with low muscle carnitine levels. He was successfully treated with L-carnitine and prednisone. [ncbi.nlm.nih.gov]

This latter individual had experienced a few episodes of syncope since 13 years of age without understanding the etiology, and diagnosis was made retrospectively. [karger.com]

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Narcolepsy

Autonomic symptoms have been reported in narcoleptic patients and include pupillary abnormalities, fainting spells, erectile dysfunction, night sweats, gastric problems, low [patient.info]

Muscle weakness also may make your knees weak or cause you to drop things you're holding. Some people lose all muscle control and fall. [nhlbi.nih.gov]

For a man experiencing a dizzy spell, syncope is the exception. [ncbi.nlm.nih.gov]

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Adrenal Insufficiency

[…] symptoms: muscle weakness fatigue and tiredness darkening in skin color weight loss or decreased appetite a decrease in heart rate or blood pressure low blood sugar levels fainting [healthline.com]

A 69-year-old Japanese man with a history of suprasellar surgery and irradiation developed bradykinesia and mild fatigue without muscle weakness, myalgia, pyramidal or extrapyramidal [ncbi.nlm.nih.gov]

The perioperative phase was characterised by hypotension and sputum stasis due to muscle weakness, which caused two readmissions to the intensive care unit. [ncbi.nlm.nih.gov]

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Cervical Spondylosis

A 55-year-old right-handed man presented for evaluation after syncopal episodes associated with right-head turning. Workup revealed cervical spondylosis with stenosis. [ncbi.nlm.nih.gov]

We found 19 patients with weakness and atrophy of the intrinsic hand muscles, and 13 patients with weakness proximal to the hand muscles to serve as a control group. [ncbi.nlm.nih.gov]

[…] shoulder blades, upper limbs) Retro-orbital or temporal pain Cervical stiffness Vague numbness, tingling or weakness in upper limbs Dizzyness or vertigo Poor balance Rarely, syncope [physio-pedia.com]

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Conn Syndrome

Low potassium may cause fatigue, muscle cramps, muscle weakness, numbness, or temporary paralysis. [web.archive.org]

Patients may present with headaches, muscle weakness and fatigue. [symptoma.com]

[…] cramps Muscle weakness Numbness Temporary paralysis Increased urine Increased thirst Figure 2: Signs and Symptoms of Primary Hyperaldosteronism The most common sign of primary [web.archive.org]

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Periodic Paralysis

The same study showed that ventricular arrhythmias were frequent (64%), syncope and cardiac arrest were reported but no individuals suffered sudden cardiac death 10. [scielo.br]

Because muscle contraction is needed for movement, a disruption in normal ion transport leads to episodes of severe muscle weakness or paralysis. [ghr.nlm.nih.gov]

In the first or second decade, affected individuals present with either cardiac symptoms (palpitations and/or syncope) or weakness that occurs spontaneously following prolonged [ncbi.nlm.nih.gov]

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Postural Orthostatic Tachycardia Syndrome

She started experiencing frequent fainting spells, which forced her to leave Union. [cnnh.org]

The most common symptoms of POTS include light-headedness or dizziness, palpitations, fainting, near-fainting, intermittent muscle weakness (commonly in the legs), and fatigue [digitalcommons.hsc.unt.edu]

It may make individuals unable to exercise because the activity brings on fainting spells or dizziness. What causes POT syndrome? [medicinenet.com]

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Inguinal Hernia

An inguinal hernia occurs when part of the small intestine or small bowel protrudes through a weak area of muscle in the lower abdomen. [livestrong.com]

This hole can occur during development before birth, or can develop over time due to age, injury or muscle weakness. [ada.com]

Muscle weakness and straining due to heavy lifting or constipation can cause a hernia. Certain exercises are discouraged when you have an inguinal hernia. [livestrong.com]

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Glycogen Storage Disease Type 6

Most patients experience muscle symptoms, such as weakness and cramps, although certain GSDs manifest as specific syndromes, such as hypoglycemic seizures or cardiomegaly. [emedicine.com]

weakness. [emedicine.medscape.com]

Although at least 14 unique GSDs are discussed in the literature, the 4 that cause clinically significant muscle weakness are Pompe disease ( GSD type II, acid maltase deficiency [emedicine.com]

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Insect Bite

(passing out) or near-syncope Confusion Hives, especially rapidly occurring large hives Stomach cramps, Nausea and vomiting If the person who has been bitten or stung carries [medicinenet.com]

The main symptom of tick paralysis is muscle weakness, poor coordination, or paralysis spreading upwards (towards the head) from the site of a tick bite or an attached tick [medbroadcast.com]

Numerous stings can result in toxicity with possible symptoms including nausea, vomiting, headache, fever, syncope, seizure, rhabdomyolysis and renal failure. 14 Bee and wasp [podiatrytoday.com]

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Hypophosphatemia

Muscle weakness secondary to hypophosphatemia is reversible and if the patient’s phosphate stores are repleted, normal muscle function will return. [openanesthesia.org]

The muscle weakness of profound hypophosphatemia may be accompanied by rhabdomyolysis, especially in acute alcoholism. [merckmanuals.com]

Hypophosphatemia is usually asymptomatic, but severe depletion can cause anorexia, muscle weakness, and osteomalacia. [merckmanuals.com]

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Cholinergic Crisis

[…] disturｂance言語障害 spikeスパイク、棘波 spinal reflex脊髄反射 spondylosis脊椎症 stiffnessこわばり、硬直 subarachnoid hemorrhage (SAH)クモ膜下出血 sympathetic交感神経［性］ symptomatic epilepsy症候性てんかん synapse シナプス syncope [tokyo-med.ac.jp]

Myasthenic crisis also results in respiratory muscle weakness, which can lead to respiratory failure and death. [learningext.com]

Muscle weakness will improve with edrophonium if the patient has myasthenia gravis while muscle symptoms will worsen in a patient with cholinergic crisis. [symptoma.com]

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Hyperparathyroidism

If left untreated, hyperparathyroidism may lead to: osteoporosis and osteomalacia (bone-weakening diseases) kidney stones muscle weakness What are the symptoms of hyperparathyroidism [childrenshospital.org]

Hyperparathyroidism Thyroid Joint pain Abdominal pain Fatigue Kidney stones Muscle weakness Excessive urination Gene mutations Adenomas Hyperplasias Carcinomas Excess PTH [nm.org]

Definition Hyperparathyroidism is a common cause of hypercalcemia and the effects of calcium at the neuromuscular junction may cause pre-existing muscle weakness. [openanesthesia.org]

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Carbamate Poisoning

Miosis (73%), excessive salivation (70%), muscle weakness (68%), and lethargy (54%) were the most common abnormal signs; 49% and 22% of patients had tachycardia and seizures [utexas.influuent.utsystem.edu]

Flaccid muscle weakness, miosis, excessive salivation are common presenting signs. [authorstream.com]

Miosis (73{\%}), excessive salivation (70{\%}), muscle weakness (68{\%}), and lethargy (54{\%}) were the most common abnormal signs; 49{\%} and 22{\%} of patients had tachycardia [utexas.influuent.utsystem.edu]

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