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What to Expect

Discover helpful insights for the road ahead

For many patients and their families, receiving a diagnosis of Lambert-Eaton myasthenic syndrome (LEMS) is a great relief! After years of searching for an answer to their mysterious and debilitating symptoms, finally uncovering the cause of their muscle weakness and fatigue is a positive experience! For others, learning that they have a lifelong condition that may worsen over time causes fear and concern. If you or your loved one has just been diagnosed with LEMS, chances are, you’re feeling a little bit of both. Fortunately, knowledge is power, and diagnosis is usually a great jump start for most patients.

Now that you know it’s LEMS, you can focus on learning what to expect and what you need to do. (Hey, you’re already doing that by visiting this website!) On this page, you’ll learn how LEMS can progress over time and how treatment can help. You’ll also discover lifestyle tips that can make managing symptoms a lot easier. There’s also information about how to prepare for medical procedures and the twists and turns that we can’t always see coming.

Read on!

I felt like I was running through quicksand!

My first impressions of LEMS

Rich, a police dispatcher and recently diagnosed LEMS patient, describes what he felt when he first noticed the symptoms of LEMS.


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Although symptoms can vary from patient to patient, the first sign of LEMS is often muscle weakness in the legs and lower body. Left untreated, LEMS symptoms may progress to other areas.

LEMS symptoms can spread and worsen

LEMS Symptom Onset Timeline*

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The timeline was created using clinical studies involving many patients. Not all patients will experience all symptoms, or, if they do, symptoms may not occur at these time intervals.

Consequences of a delay in diagnosis or
treatment of LEMS may lead to greater:

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Spread and severity of

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Loss of Function
and Mobility

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Loss of Independence and
quality of life


How Rich's symptoms progressed

Rich describes how his LEMS symptoms grew worse in the following months and how it affected his job before he was finally diagnosed and treated.


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As with any chronic condition, there are things that you can do to help maintain your health and improve your quality of life. The following tips may be especially helpful for patients with LEMS.

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Stay on schedule

Follow your doctor’s prescription as closely as possible. This is especially important at the start of treatment, when your doctor will be titrating (adjusting the amount of medicine you take) to find the exact dosage that provides you with the most symptom relief and the fewest side effects.

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Exercise moderately

With your doctor’s approval, consider light weight training or physical therapy to help improve stamina and maintain muscle strength. Daily walking and breathing exercises may also increase your energy levels.

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Keep cool

Symptoms of LEMS may get worse when you become overheated or have a fever. Avoid taking hot showers or baths. Be careful not to overdo exercise. Contact your doctor if you start noticing signs of a cold or flu.

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Get 8 hours of sleep

A full night’s rest may help you manage fatigue and reduce stress. Try to limit alcohol, caffeine, and screen time to make it easier to fall asleep.

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Eat a healthy diet

Be sure to include lots of fruits and vegetables to give your body the nutrients and vitamins it needs to stay energized and minimize fatigue.


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Timely LEMS diagnosis and treatment often results in patients feeling better and enjoying a return to more normal function. This is a great time to take stock of your situation and surroundings and make sure that you have everything you need to continue to stay well and safe—now and in the future.

Over time, LEMS symptoms can change or worsen. The passage of time also means getting older, and we all naturally lose some function: Our eyesight is not quite 20/20, our joints ache a little more, and we’re not quite as steady or as flexible as we used to be.

Taking the time now to prepare for the future can help keep yourself or your loved one safe, healthy, and functional for years to come.

Managing LEMS today and tomorrow

LEMS-proof your home

The last thing a LEMS patient needs is a slip and fall. Inspect your home for tripping hazards such as slippery floors, loose rugs, or cluttered walkways. Consider adding handrails to staircases, bathrooms, and showers for added stability. Your insurance company may pay for an occupational therapist to assess your home for safety and provide suggestions for making everyday activities easier.

Buy yourself a bracelet

A medical ID bracelet or pendant can provide identification if you’re ever in need of assistance and unconscious or unable to speak. Consider using a personal medical alarm help button system such as LifeLine® for further security and peace of mind for yourself or your loved one.

Step up your exercise

Time steals muscle tone and bone density. Talk with your doctor, physiatrist, or physical therapist about tailoring an exercise plan for you that will keep your bones and muscles strong, flexible, and functional now and in the future.

Make a long-term plan

Sit down with your family or caregiver and have an honest discussion about the future. Discuss your concerns, fears, and expectations, and then listen to theirs. Come up with a plan of support that you’re both comfortable with, and be sure to consider contingencies that may arise. Life is full of demands, and change is the only constant. Planning ahead now means that no one is left behind.


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  • Saliva production is important for maintaining healthy gums and teeth. Because LEMS can cause dry mouth, ask your dentist if you should consider an over-the-counter spray that can help your mouth stay moist
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  • For patients with LEMS, it is important to inform the healthcare team of LEMS prior to undergoing surgery
  • The effects of general anesthetics, including neuromuscular blocking drugs, may last longer
  • General anesthesia may slow breathing; however, complications are rare as long as your anesthesiologist is aware that you have LEMS and can take precautions
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  • Make an appointment plan to ensure that you get everything you need from the visit. Write down things that you want to discuss, including what has changed since the last visit, concerns about new symptoms or side effects, and any questions you may have
  • Record the appointment using your phone or another device to ensure that you don’t miss any directions or details the physician gives you. (Be sure to get the doctor’s permission before recording)
  • Update your treatment plan following the appointment. The plan should contain detailed information about your disease and current medications. Be sure to write down the prescribed dose and schedule, cost, and any potential side effects to be aware of
  • Keep good medical records, and keep all of the information up to date and together in one designated place so that it doesn’t get lost
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  • Discuss your travel plans with your doctor to make sure that the location and activities you have planned are safe or if you need to take any extra precautions
  • Talk to your doctor about your medicines. Discuss your travel plans with your doctor to get guidance about how to safely carry your medications with you. For example, you may need a doctor’s authorization to carry your prescription medication through airport security. It may also make more sense to get your prescription refill at your destination
  • If you have trouble walking, check in with the airport or train station if you think you may need to travel with medical equipment such as a cane, a walker, a wheelchair, or an electric scooter
  • Carry important paperwork on your person, not in your checked luggage. You don’t want to lose important documents like your health insurance card, travel insurance, or your physician’s letter detailing any medical equipment or medication needed during travel
  • If you feel unwell during travel, alert the flight attendant, train conductor, or other personnel immediately before the situation worsens
  • Be prepared to deal with the climate and environment at your destination. Make sure to pack the right clothes to keep yourself warm or cool, and items like sunscreen and sunglasses if appropriate
  • If you’re planning travel to a warmer climate, keep in mind that getting overheated can make LEMS symptoms worse. Make sure to stay hydrated, avoid prolonged periods in the sun, and take cool showers
  • Know the location of local clinics for timely medical care or access to wheelchairs or motorized scooters. You may not use them at home, but travel can be taxing, and being in a different place may require that you have a little more help getting around

Stay informed

More content is on the way for LEMS Aware, including video stories with real patients who are living and thriving with LEMS. Sign up to stay informed about new additions to the website as well as other resources that become available.

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