Symptoms of focal dystonia depend on the affected area. Focal dystonia commonly affects the eyelids, jaw, tongue, neck, vocal cords, hand, or forearm but can occur in other areas. Symptoms of focal dystonia may progress, stay the same or stop, and then recur. The initial symptom of focal dystonia may be reduced muscle coordination, such as dropping things. As focal dystonia progresses, symptoms may include muscle pain, twitching muscles, muscle cramps, and abnormal postures of the affected area. Secondary symptoms of focal dystonia may include fatigue, trouble focusing, blurred vision, mood swings, depression, short temper, and difficulty sleeping.