Symptoms of PSP begin, on average, when an individual is in their 60s, but may start earlier or later. PSP is slightly more common in men than women, but it has no known geographical, occupational or racial preference.
- Loss of balance
- Generalized slowness and stiffness
- Problems with thinking
- Limitation of eye movements, especially in the downward direction
- Weakened movements of the mouth, tongue and throat
- Difficulty swallowing