Myasthenia Gravis: Drooping Eyelid, Muscle Weakness & Treatment Guide — Hyderabad

Myasthenia Gravis (MG) is one of the most well-understood and treatable autoimmune neurological conditions — yet it is frequently undiagnosed for months or even years because its symptoms are so variable and commonly attributed to stress, fatigue, or depression.

The Hallmark of Myasthenia Gravis

The defining feature of MG is fatigable weakness — weakness that becomes worse with sustained activity and improves with rest. This fluctuating pattern is unlike any other muscle condition and is the key diagnostic clue.

Examples:

• Eyelids are open in the morning but droop progressively by evening
• Voice is clear in the morning but becomes nasal and weak after talking for 15 minutes
• Arm strength is normal at the start of exercise but gives way rapidly
• Swallowing is normal at the beginning of a meal but deteriorates with each bite

Symptoms of Myasthenia Gravis

Ocular (Eye) Symptoms — Most Common First

• Ptosis: Drooping of one or both eyelids — worsening through the day
• Diplopia: Double vision — from weakness of eye movement muscles
• About 50% of patients begin with purely eye symptoms (ocular MG)

Bulbar Symptoms

• Difficulty chewing — jaw becomes tired with tough food
• Dysarthria — slurred or nasal speech after prolonged talking
• Dysphagia — difficulty swallowing, particularly solids; food regurgitating through the nose

Limb Weakness

• Difficulty raising arms above the head (hair washing, reaching shelves)
• Difficulty climbing stairs or rising from a chair
• Hands becoming weak after sustained use

Myasthenic Crisis — Emergency

A myasthenic crisis occurs when respiratory muscles weaken — causing breathing difficulty, inability to cough, and risk of respiratory failure. It requires immediate ICU admission. Triggers include: respiratory infections, surgery, missed medication, and certain drugs (fluoroquinolone antibiotics, beta-blockers, magnesium).

If you have MG and develop increasing breathlessness or cannot swallow — go to a hospital emergency immediately.

Diagnosis

At Sri Anand CNC, Dr. Anand Karnam diagnoses MG using:

• Repetitive Nerve Stimulation (RNS): The key electrodiagnostic test — shows a decremental response in MG
• Single Fibre EMG: Most sensitive test — arranged at specialist centres
• Acetylcholine Receptor Antibodies (AchR-Ab): Positive in 85% of generalised MG
• Anti-MuSK antibodies: For AchR-Ab negative cases
• Thymus CT scan: To detect thymoma (present in 10–15% of MG)

Treatment — Most Patients Achieve Excellent Control

1. Pyridostigmine (Mestinon): First-line symptomatic treatment. Improves strength within 30–60 minutes
2. Prednisolone: Disease-modifying — reduces immune attack on the neuromuscular junction
3. Azathioprine: Steroid-sparing immunosuppression for long-term management
4. Thymectomy: Surgery to remove the thymus — improves long-term outcomes in patients under 60 with generalised MG
5. IVIg / Plasmapheresis: For acute crises or pre-operative stabilisation

With appropriate treatment, the vast majority of MG patients achieve complete remission or minimal manifestations — living completely normal lives.

If you have a drooping eyelid, double vision, or fatigable weakness, call Sri Anand CNC for a neurological evaluation: +91 90633 66983. Chanda Nagar, Hyderabad.