Introduction

Lambert-Eaton myasthenic syndrome (LEMS) is a very rare condition that affectsthe signals sent from the nerves to the muscles.

It means the muscles are unable to tighten (contract) properly, resulting inmuscle weakness and a range of other symptoms.

About half of LEMS cases occur in middle-aged or older people with Lung cancer .The remainingcases aren't associated with cancer and can start at any age.

LEMSis also known as myasthenic syndrome or Eaton-Lambert syndrome.

This page covers:

Symptoms

Causes

Tests and diagnosis

Treatments

Outlook

Content supplied by the NHS Website

Medically Reviewed by a doctor on 31 Okt 2016