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People may experience:
Pain areas: in the back or eyes
Pain circumstances: can occur in the back due to head nod or with eye movement
Tremor: can occur during precise movements, in the hands, or limbs
Muscular: cramping, difficulty walking, inability to rapidly change motions, involuntary movements, muscle paralysis, muscle rigidity, muscle weakness, problems with coordination, stiff muscles, clumsiness, muscle spasms, or overactive reflexes
Whole body: fatigue, dizziness, heat intolerance, poor balance, or vertigo
Urinary: excessive urination at night, leaking of urine, persistent urge to urinate, or urinary retention
Sensory: pins and needles, abnormality of taste, reduced sensation of touch, or uncomfortable tingling and burning
Visual: blurred vision, double vision, or vision loss
Mood: anxiety or mood swings
Speech: difficulty speaking or slurred speech
Sexual: erectile dysfunction or sexual dysfunction
Also common: constipation, depression, difficulty raising the foot, difficulty swallowing, difficulty thinking and understanding, flare, headache, heavy legs, numbness of face, rapid involuntary eye movement, sleep deprivation, tongue numbness, or weakness
