{"id":8246,"date":"2026-06-12T12:00:55","date_gmt":"2026-06-12T10:00:55","guid":{"rendered":"https:\/\/complexspineinstitute.com\/sin-categoria\/syringomyelia-symptoms-diagnosis-and-treatment\/"},"modified":"2026-06-12T12:01:24","modified_gmt":"2026-06-12T10:01:24","slug":"syringomyelia-symptoms-diagnosis-and-treatment","status":"publish","type":"post","link":"https:\/\/complexspineinstitute.com\/en\/neurosurgery-blog\/syringomyelia-symptoms-diagnosis-and-treatment\/","title":{"rendered":"Syringomyelia: symptoms, diagnosis and treatment"},"content":{"rendered":"\t\t
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Syringomyelia is a fluid-filled cavity within the spinal cord. Sometimes it is found incidentally on an MRI and does not cause significant symptoms. Other times it may be associated with pain, sensory loss, weakness or gait disturbances. The key is to assess symptoms, neurological examination, probable cause and evolution on imaging.<\/p>

  • Syringomyelia is not a tumor: it usually describes a cavity or \u201csyrinx\u201d within the spinal cord.<\/li>
  • It can be associated with Chiari malformation, trauma, tumors, arachnoiditis, tethered cord or prior surgery.<\/li>
  • Magnetic resonance imaging (MRI) is the main test to see it and monitor its evolution.<\/li>
  • Not all cases require surgery; some only need surveillance.<\/li>
  • Surgery is considered mainly if there are progressive symptoms, enlargement of the syrinx or a correctable cause.<\/li>
  • Progressive weakness, problems walking or changes in bladder or bowel function require urgent assessment.<\/li><\/ul>

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    What is syringomyelia<\/h2>

    Syringomyelia is the presence of a fluid-filled cavity within the spinal cord. That cavity is called a syrinx. The spinal cord is an essential nervous structure: it transmits information between the brain and the body, and it is involved in strength, sensation, reflexes, coordination and part of bladder and bowel control.<\/p>

    When a syrinx is small and stable it may not produce symptoms. In other cases, if it increases in size or affects specific nerve pathways, it can cause pain, sensory loss, weakness, stiffness, gait disturbances or coordination problems. Therefore what matters is not only that the word \u201csyringomyelia\u201d appears on an MRI, but interpreting the finding within the clinical context.<\/p>

    The key questions are: are there compatible symptoms? Is the syrinx growing? Is there a Chiari malformation or another cause? Is there neurological impairment on examination? Are there changes on follow-up imaging?<\/p>

    One of the best-known causes is Chiari malformation type I, in which part of the cerebellum descends toward the junction between the skull and the cervical spine. This can alter the circulation of cerebrospinal fluid, which is the fluid that surrounds and protects the brain and spinal cord. Syringomyelia can also appear after spinal trauma, tumors, infections, arachnoiditis, tethered cord or previous surgeries. In some people no clear cause is identified.<\/p>

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    The 9 signs you should know<\/h2>

    1. Loss of sensitivity to heat or pain<\/h3>

    A classic sign is reduced perception of temperature or pain, especially in the hands, arms, shoulders or upper back. Some people get burned or cut without realizing it until later. It does not always occur, but when present it is very suggestive because the syrinx can affect sensory pathways within the cord.<\/p>

    2. Neuropathic pain<\/h3>

    Neuropathic pain is often felt as burning, electric shocks, stabbing, intense tingling or pain that is difficult to explain. It can affect the neck, back, arms, trunk or legs, depending on the area of the cord involved. Not all back pain is due to syringomyelia, but unusual, persistent pain accompanied by neurological symptoms warrants investigation.<\/p>

    3. Weakness or muscle wasting<\/h3>

    Syringomyelia can affect motor pathways or neurons that control specific muscles. You may notice loss of strength in the hands, difficulty opening jars, dropping objects, clumsiness when writing or muscle wasting. Progressive weakness should always be prioritized for evaluation.<\/p>

    4. Stiffness or spasticity<\/h3>

    Some people describe stiff legs, a sense of tightness, clumsiness when walking or difficulty moving the body smoothly. This can indicate involvement of long spinal pathways. Spasticity is not a simple contracture: it is an abnormal increase in muscle tone due to neurological alteration.<\/p>

    5. Balance or gait problems<\/h3>

    Tripping more often, walking unsteadily or needing to look at the ground frequently can have many causes. If accompanied by sensory changes, weakness, stiffness or a syrinx on MRI, it should be evaluated systematically.<\/p>

    6. Headache related to coughing or straining<\/h3>

    When Chiari malformation exists, some people notice pain in the occipital or cervical area that worsens with coughing, laughing, sneezing or straining. Not every headache triggered by exertion means Chiari, but it is a useful clue when it appears alongside syringomyelia.<\/p>

    7. Scoliosis or postural changes<\/h3>

    In children and adolescents, a syrinx can be discovered when investigating scoliosis. In adults, postural changes usually have many causes, but if there are neurological signs or an intramedullary cavity visible on MRI, specialized assessment is advisable.<\/p>

    8. Changes in bladder, bowel or sexual function<\/h3>

    These are not always the first symptoms, but they can appear if there is significant spinal cord involvement. New difficulty urinating, incontinence, loss of bowel control or neurological changes in the genital area change clinical priority.<\/p>

    9. Symptoms that progress<\/h3>

    Progression matters a lot. A syrinx that is stable for years is not interpreted the same as a cavity that increases in size or symptoms that worsen month by month. Clinical or radiological progression is one of the reasons to accelerate investigation and reconsider treatment.<\/p>

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    Symptoms and indications<\/h2>

    Syringomyelia can produce very different symptoms because the spinal cord contains many nerve pathways in a small space. In the cervical region it can affect the hands, arms, shoulders, gait and balance. In the thoracic region it can cause band-like pain, sensory disturbances of the trunk or stiffness in the legs. In the lower lumbar region it is less common to speak of pure syringomyelia, because the spinal cord ends approximately in the upper part of the lumbar spine, although problems related to the conus medullaris or tethered cord can occur.<\/p>

    Suspicion should be higher if there is a combination of neuropathic pain, loss of sensitivity to heat or pain, weakness, stiffness, gait disturbance or history of Chiari, spinal trauma, tumor, infection, meningitis, prior surgery or congenital malformation.<\/p>

    In contrast, a small syrinx found incidentally in an asymptomatic person may require observation rather than immediate action. In spine medicine, operating on an image without clinical correlation can expose the patient to unnecessary risks. That is why the whole picture is always considered: symptoms, examination, MRI and evolution.<\/p>

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    Diagnosis<\/h2>

    Medical history<\/h3>

    Diagnosis begins by listening to the pattern of symptoms: when they started, whether they are progressing, what areas are affected, whether there is cough-related headache, history of trauma, infections, prior surgeries, scoliosis or changes in bladder and bowel function. Family history, neurological diseases and previous treatments are also reviewed.<\/p>

    Neurological examination<\/h3>

    The examination assesses strength, reflexes, sensation, coordination, gait, muscle tone and signs of spinal cord involvement. This part is important because an MRI may show a syrinx, but the examination helps decide whether the finding has functional impact.<\/p>

    Magnetic resonance imaging<\/h3>

    MRI is the main test. It allows visualization of the syrinx, its extent, its diameter, its relation to the cord and possible causes. In many cases the cranio-cervical junction is studied to look for Chiari. Depending on the symptoms, imaging of the entire spine may be necessary.<\/p>

    MRI with contrast and additional studies<\/h3>

    If there is suspicion of tumor, inflammation, infection or intramedullary lesion, contrast-enhanced MRI may be indicated. In selected cases studies of cerebrospinal fluid flow, CT, neurophysiology or urological assessment may be requested. These tests are not automatic: they are ordered if they help clarify the cause or change management.<\/p>

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    Non-surgical and surgical alternatives<\/h2>

    Observation and follow-up<\/h3>

    If the syrinx is small, non-progressive and there are no relevant symptoms, clinical follow-up and periodic MRIs may be recommended. The interval depends on the case. Observation does not mean ignoring the problem, but monitoring it without taking unnecessary risks.<\/p>

    Symptom control and rehabilitation<\/h3>

    Neuropathic pain may require specific medication, tailored physiotherapy, pain education and graded activity strategies. Rehabilitation aims to maintain mobility, strength, balance and function. If there is spinal cord involvement, aggressive manipulations of the neck or back should be avoided until a clear assessment is made.<\/p>

    Treat the cause<\/h3>

    When syringomyelia is associated with Chiari, the surgical objective is usually to restore normal cerebrospinal fluid flow at the cranio-cervical junction. If it is related to a tumor, arachnoiditis, tethered cord or a specific obstruction, treatment differs. The syrinx is not treated the same in all patients: the underlying cause is treated when it is identifiable and clinically relevant.<\/p>

    Syrinx drainage or shunting<\/h3>

    In some selected cases diversion or drainage of the syrinx is considered. However, this is not usually the first option if there is a correctable cause. Shunt systems can become obstructed, infected or injure nervous tissue, so they are reserved for specific situations.<\/p>

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    Benefits, risks and adverse effects<\/h2>

    The benefit of treating progressive syringomyelia is to try to halt spinal cord damage, reduce pressure on nerve pathways and improve or stabilize symptoms. In cases associated with Chiari, decompression can improve cerebrospinal fluid flow and promote reduction of the syrinx over time.<\/p>

    Risks depend on the intervention. Posterior fossa decompression can carry risks of infection, bleeding, cerebrospinal fluid leak, neck pain, pseudomeningocele, anesthetic complications or need for reoperation. Syrinx shunting adds risks of obstruction, displacement, infection or spinal cord injury.<\/p>

    Therefore, when there is no progression or significant symptoms, surveillance may be safer than surgery. Decisions must be individualized and supported by symptoms, examination, imaging and realistic expectations.<\/p>

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    Criteria for referral<\/h2>

    Referral to neurology or neurosurgery is advisable if MRI describes syringomyelia, syrinx, intramedullary cavity or hydromyelia and there are neurological symptoms. Also if there is Chiari, unexplained scoliosis, loss of pain or temperature sensation, progressive weakness, stiffness, persistent neuropathic pain or changes in gait.<\/p>

    Referral should be prioritized if symptoms are progressing, if the syrinx increases on follow-up, if objective weakness appears or if there are signs of bladder or bowel involvement. In these cases it is not advisable to merely wait without a clear plan.<\/p>

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    Realistic recovery times<\/h2>

    If management is observation, there is no surgical recovery time: the goal is to control symptoms, maintain function and confirm stability. If a cause such as Chiari is operated on, hospital stay and recovery depend on the technique, age, general condition and previous symptoms.<\/p>

    Improvement of headaches or some symptoms may occur before recovery of strength or sensation. The spinal cord recovers slowly. Some improvements can be seen in weeks, but others are assessed over months. If a symptom has been present for a long time or there is established spinal cord damage, it may not fully disappear.<\/p>

    Therefore expectations must be realistic: many surgeries aim to halt deterioration and protect neurological function, not to guarantee immediate normality.<\/p>

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    When to go to the emergency department<\/h2>

    Go to the emergency department if you develop new or progressive weakness in the arms or legs, difficulty walking, repeated falls, loss of bladder or bowel control, numbness in the genital or anal area, intense neck or back pain with fever, or rapid neurological deterioration.<\/p>

    Urgent evaluation is also required for worsening after surgery, fever, drainage of fluid from the wound, severe headache when standing up or new neurological deterioration.<\/p>

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    Myths and realities<\/h2>

    Myth: \u201cA syrinx is a tumor\u201d<\/h3>

    Reality: no. A syrinx is a fluid-filled cavity within the spinal cord. Sometimes it can be caused by a tumor, but they are not the same.<\/p>

    Myth: \u201cIf it appears on MRI, it must be operated\u201d<\/h3>

    Reality: not always. Many stable and minimally symptomatic cases are monitored.<\/p>

    Myth: \u201cIf it doesn’t hurt, it doesn’t matter\u201d<\/h3>

    Reality: it can matter if it grows or affects neurological pathways. Absence of pain does not always mean absence of risk.<\/p>

    Myth: \u201cSurgery always eliminates all symptoms\u201d<\/h3>

    Reality: surgery can stabilize or improve symptoms, but recovery depends on the cause, duration of damage and prior neurological status.<\/p>

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    Frequently asked questions<\/h2>

    Is syringomyelia serious?<\/h3>

    It can be, but not always. A small, stable syrinx can be monitored. A progressive syrinx or one associated with neurological symptoms requires specialized evaluation.<\/p>

    Can you live with a syrinx in the spinal cord?<\/h3>

    Yes, some people live for years with a stable syrinx. The important thing is to know the cause, control symptoms and follow the evolution.<\/p>

    What test confirms syringomyelia?<\/h3>

    MRI is the main test. It can be complemented with contrast or flow studies if a specific cause is suspected.<\/p>

    Is syringomyelia always caused by Chiari?<\/h3>

    No. Chiari is a frequent cause, but it can also appear after trauma, tumors, infections, arachnoiditis, tethered cord or without a clear cause.<\/p>

    When is surgery performed?<\/h3>

    Surgery is considered if there are progressive symptoms, enlargement of the syrinx, symptomatic Chiari or another correctable cause. The decision must be individualized.<\/p>

    Does the syrinx disappear after surgery?<\/h3>

    It can decrease, but it does not always disappear completely. Also, clinical improvement does not always match exactly with the size of the syrinx.<\/p>

    Does physiotherapy help?<\/h3>

    It can help maintain mobility, strength and balance, but it must be adapted. If there is spinal cord involvement, aggressive techniques should be avoided without medical supervision.<\/p>

    What symptoms should I not ignore?<\/h3>

    Progressive weakness, gait problems, marked loss of sensation, sphincter changes, severe pain with fever or rapid worsening require urgent assessment.<\/p>

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    Glossary<\/h2>
    • Syringomyelia:<\/strong> fluid-filled cavity within the spinal cord.<\/li>
    • Syrinx:<\/strong> name for that intramedullary cavity.<\/li>
    • Spinal cord:<\/strong> nervous structure that connects the brain and body.<\/li>
    • Cerebrospinal fluid:<\/strong> fluid that surrounds and protects the brain and spinal cord.<\/li>
    • Chiari type I:<\/strong> descent of cerebellar structures toward the cervical canal.<\/li>
    • Hydromyelia:<\/strong> dilation of the central canal of the cord, a term sometimes used overlappingly.<\/li>
    • Arachnoiditis:<\/strong> inflammation or scarring of a membrane that surrounds the cord and nerve roots.<\/li>
    • Neuropathic pain:<\/strong> pain originating from irritation or damage to the nervous system.<\/li>
    • Spasticity:<\/strong> abnormal increase in muscle tone, with stiffness or resistance to movement.<\/li>
    • Shunting:<\/strong> tube or system used in selected cases to drain fluid.<\/li><\/ul>

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      References<\/h2>
      • NINDS. Syringomyelia. 2026. https:\/\/www.ninds.nih.gov\/health-information\/disorders\/syringomyelia<\/li>
      • Mayo Clinic. Syringomyelia – Symptoms and causes. 2024. https:\/\/www.mayoclinic.org\/diseases-conditions\/syringomyelia\/symptoms-causes\/syc-20354771<\/li>
      • Mayo Clinic. Syringomyelia – Diagnosis and treatment. 2024. https:\/\/www.mayoclinic.org\/diseases-conditions\/syringomyelia\/diagnosis-treatment\/drc-20354775<\/li>
      • AANS. Chiari Malformation. https:\/\/www.aans.org\/patients\/conditions-treatments\/chiari-malformation\/<\/li>
      • Shenoy VS, et al. Syringomyelia. StatPearls, NCBI Bookshelf. 2024. https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK537110\/<\/li>
      • Ciaramitaro P, et al. Diagnosis and treatment of Chiari malformation and syringomyelia in adults: international consensus document. Neurological Sciences. 2022. https:\/\/pubmed.ncbi.nlm.nih.gov\/34129128\/<\/li>
      • Massimi L, et al. Chiari Malformation Type 1 and Syringomyelia. 2023. https:\/\/pubmed.ncbi.nlm.nih.gov\/38153462\/<\/li>
      • Visocchi M, et al. Indications for Surgery and Surgical Options in Chiari Malformation. 2025. https:\/\/pubmed.ncbi.nlm.nih.gov\/39927413\/<\/li>
      • Yuan C, et al. Natural history of Chiari I malformation-syringomyelia. 2025. https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC12703315\/<\/li>
      • Cleveland Clinic. Syringomyelia. 2026. https:\/\/my.clevelandclinic.org\/health\/diseases\/6126-syringomyelia<\/li><\/ul>

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        Health education notice:<\/strong> This article is for informational purposes and does not replace an individual medical assessment. If you experience loss of strength, difficulty walking, sensory changes, fever, severe pain or bladder or bowel disturbances, seek medical attention.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":6381,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-8246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-neurosurgery-blog"],"_links":{"self":[{"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/posts\/8246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/comments?post=8246"}],"version-history":[{"count":0,"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/posts\/8246\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/media\/6381"}],"wp:attachment":[{"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/media?parent=8246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/categories?post=8246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/complexspineinstitute.com\/en\/wp-json\/wp\/v2\/tags?post=8246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}