MedDroid
Ask MedDroid
Myasthenia Gravis
Myasthenia gravis is an autoimmune condition where communication between nerves and muscles is disrupted, causing muscle weakness that worsens with activity and improves with rest.
Causes & risk factors
- The immune system blocking nerve-to-muscle signals
- Problems with the thymus gland
- Autoimmune tendency
- Symptoms can be triggered by infection, stress or some medicines
Common symptoms
- Drooping eyelids
- Double vision
- Weakness that worsens through the day
- Difficulty swallowing or chewing
- Slurred speech
- Weak arms or legs
Tests & diagnosis
- Blood test for specific antibodies
- Nerve-muscle (repetitive stimulation) tests
- CT scan of the chest (thymus)
- Breathing tests
Treatment & management
- Medicines that improve nerve-to-muscle signalling
- Immune-suppressing treatments
- Removal of the thymus gland in selected cases
- Immunoglobulin or plasma exchange for severe flare-ups
- Avoiding known trigger medicines and treating infections promptly
When to see a doctor urgently
- Difficulty breathing or swallowing — call your local emergency number now (myasthenic crisis)
- Rapidly worsening weakness
- New drooping eyelids or double vision
- Weakness that worsens with activity through the day
Frequently asked questions
What is a myasthenic crisis?
It is a severe flare where the breathing muscles become weak, which is a medical emergency needing hospital support. Any breathing or swallowing difficulty should prompt an emergency call.
Can it be controlled?
Yes. With medicines and, in some cases, thymus surgery or immune treatments, most people achieve good control and lead active lives, though ongoing specialist care is needed.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.