Symptoms of functional neurological symptom disorder (conversion disorder) depend on the brain regions that are the most affected. These are the most common symptoms of this disorder:

• Pain.
• Dizziness.
• Difficulty swallowing.
• Fainting.
• Disruptions in the senses.
• Muscle weakness or paralysis.
• Persistent lethargy.
• Psychogenic non-epileptic seizures.
• Uncommon muscle tightness, twitches, cramps, and tremors.