• Lambert-Eaton myasthenic syndrome (LEMS) causes muscle weakness, usually first in the upper legs and upper arms. The attack interferes with the ability of nerves to send signals to muscles. A progressive syndrome it develops into eye muscles, and those involved in talking, chewing; sometimes dry mouth, constipation, impotence and bladder urgency. Lambert-Eaton Myasthenic Syndrome
  • Linear IgA disease DermNet NZ
  • Lupus - see Systemic lupus erythematosus  





  • Neuromyotonia or Isaac's syndrome has stiffness and cramping in the limbs, involuntary twitching of the muscles, muscles not relaxing even during sleep and fatigue. Medilnks
  • Neutropenia see Autoimmune Neutropenia




  • Oophoritis - this is not a mis-spelling - it is inflammation of ovaries resulting in the destruction of the ovaries and a loss of fertility. Johns Hopkins University School of Medicine  
  • Opsoclonus-myoclonus syndrome causes unsteady gait, muscle spasms and irregular eye movements. Difficulty speaking may also be involved. Often seen in children less than 2 years old omsusa NINDS
  • orchitis is an inflammation of the testis with mild testicular pain or swelling, resulting in infertility. Johns Hopkins Autoimmune Disease Research Centre



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