Neuro: Motor Neuron Disease: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Motor Neuron Disease🎧 A clear, high-yield breakdown of this progressive neuromuscular disorder – perfect for exam prep and real-life clinical scenarios.🧠 Key Learning Points📌 Definition• Motor Neuron Disease (MND) is a progressive neurodegenerative condition affecting motor neurons, leading to muscle weakness, wasting, and loss of function.• It classically affects both upper and lower motor neurons.📌 Causes & Risk Factors• Mostly sporadic; ~10% familial• Genetic mutations: SOD1, C9ORF72• Age: Typically 40–70 years• Slightly more common in males🧠 Mnemonic: "MND is Mainly Neurological + Degenerative" – Male, Neurons (UMN & LMN), Degenerative📌 Pathophysiology• Degeneration of motor neurons in brain and spinal cord• Both UMN (spasticity, brisk reflexes) and LMN (wasting, fasciculations) involved• No sensory involvement• Possible mitochondrial dysfunction and oxidative stress in familial types📌 Symptoms• Painless, progressive muscle weakness• Fasciculations, spasticity• Dysarthria, dysphagia (especially in bulbar onset)• Respiratory muscle involvement• Cognitive/behavioural changes possible🧠 Mnemonic: "Weak FAST" – Fasciculations, Atrophy, Spasticity, Tongue (bulbar signs)📌 Differential Diagnosis• Benign cramp fasciculation syndrome• Cervical myelopathy• Multifocal motor neuropathy (MMN)• Inclusion body myositis• Myasthenia gravis, diabetic amyotrophy, spinal tumours📌 Diagnosis• Clinical diagnosis supported by: – EMG: shows denervation – Nerve conduction studies: exclude neuropathies – MRI: rule out structural causes – Bloods: B12, TSH, infections• Genetic testing if family history🧠 Tip: Think LMN + UMN signs with no sensory loss = MND📌 Management• Multidisciplinary team: neurologist, physio, OT, speech therapist, respiratory, palliative care• Medications: – Riluzole (extends life ~2–3 months) – NIV (extends survival ~7 months) – PEG feeding for nutrition• Symptom relief: – Baclofen, tizanidine (spasticity) – Quinine (cramps) – Antimuscarinics, Botox (sialorrhoea)📌 Complications• Respiratory failure (most common cause of death)• Aspiration pneumonia• Malnutrition• Depression, loss of speech• Severe immobility, skin breakdown📌 Prognosis• Median survival: 2–4 years from symptom onset• Bulbar onset, older age, rapid progression = poorer prognosis• ~5–10% survive 10+ years📎 More MSRA Resources for Motor Neuron Disease📝 Revision Notes: https://www.passthemsra.com/topic/motor-neuron-disease-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/motor-neuron-disease-flashcards/💬 Accordion Q&A Notes: https://www.passthemsra.com/topic/motor-neuron-disease-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/motor-neuron-disease-rapid-quiz/🎓 Full Course: https://www.passthemsra.com/courses/neurology-for-the-msra/Hashtags#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQ&ANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #MotorNeuronDisease #Neurology