FSHD causesMuscle weakness progresses over time, affecting daily activities.
Usually starts inadolescence or young adulthood, but it is possible:
Early onset (young children, ~5%)
Or very late (>50–60 years old)
Asymmetric muscle weaknessis a typical sign (one side is heavier than the other).
The disease progresses very differently in each person.

Group of facial symptoms
Difficulty whistling or blowing bubbles
Difficulty drinking with a straw
Do not close your eyes when sleeping
The mouth may deviate when at rest
👉 Due to muscle weakness around the eyes and mouth

Group of shoulder and hand symptoms
Scapular winging (scapular winging)
Difficulty raising arms over shoulders
Weakness in arms, hands, fingers
👉 You can clearly see the asymmetry between the two sides

Body symptom group
Weak abdominal muscles → belly protrudes like a “pregnant belly”
Loss of chest muscles, concave chest
Curved spine (arched, hunched, scoliotic)

Group of symptoms in the legs
Weak legs, easy to fall
Foot drops(feet droop, difficulty lifting feet)
👉 Makes walking difficult

Whole body symptoms
Prolonged fatigue
Muscle pain (may be burning, back, shoulder, neck, leg pain) 
Reduced mobility 
👉 Can significantly affect quality of life 

 Accompanying symptoms (less common)     
Difficulty breathing/respiratory failure 
Hearing loss (especially high frequency) 
Coats disease (eyes, rare) 
Mild arrhythmia (5–9%)     

Progressive characteristics
Not all muscles are affected at the same time
Some muscles are weak, neighboring muscles are still normal
Progressunpredictable
Approx20% of patients may need a wheelchairlater