Turning LEMS 
 knowledge 
 into strength 


For people affected by Lambert-Eaton myasthenic syndrome (LEMS), understanding the challenges ahead is one key to moving beyond them.

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Information has the power to change lives.

LEMS Aware was created to deliver relevant information, resources, and connections to patients and caregivers who may be dealing with LEMS. Wherever you are on your journey—searching for the right doctor, the right diagnosis, or the right treatment—this site can guide you to that next milestone.

Stay informed

What is LEMS?

LEMS is a rare neuromuscular condition that can have a profound effect on a person’s mobility and quality of life

Lambert-Eaton myasthenic syndrome, also known as LEMS, is a disorder that affects the communication between nerves and muscles. It is named after the two neurologists, Dr. Edward Lambert and Dr. Lee Eaton, who first identified the syndrome at the Mayo Clinic during the 1950s.

LEMS typically causes severe, debilitating, and progressive weakness in the upper legs and hips, making it difficult for a person to walk or even stand. LEMS can also weaken the muscles of the upper arms and shoulders, making self-care and independence difficult. Some people with LEMS also experience other symptoms, such as dry mouth or problems with vision. You can learn more about all the symptoms of LEMS in the next section.

“Is it LEMS?” video
Is It LEMS?

Learn more about LEMS symptoms and how you can take charge of your health to get the proper diagnosis and treatment you need.

Ready to explore and learn more about LEMS?


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How LEMS affects the body

Severe muscle weakness is typically the most recognizable sign of LEMS, but it’s not the only one. LEMS also causes other symptoms. Use the LEMS Symptom Map to learn all the signs that may point to a diagnosis of LEMS.

Go to LEMS Symptom Map >
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Doctors who treat LEMS

Still undiagnosed? It may be time to schedule a visit with a specialist in neuromuscular disease. Visit the Diagnosis and Treatment page to learn more about LEMS experts who can put you on the path to feeling better.

Discover LEMS doctors >
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Helpful lifestyle tips

Diagnosis and treatment are the most important milestones on the journey to feeling better, but there are other things that you can do to help manage your condition. Learn some helpful tips on the LEMS community page.

Get LEMS insights >

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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.