A Connecticut doctor says during Parkinson's Awareness Month, it's important to be aware of the many signs of the disease.

Over 90,000 people are diagnosed annually with disease. It impacts the nerve cells in the brain and causes tremors and other symptoms.

"We don't know exactly what causes it, but we do know a specific area in the brain stops functioning. And because this specific area of the brain stops functioning, other places in the brain take control. When they take control, they're hyperactive. This hyperactivity causes tremor, rigidity, spasticity and slowness of movement," says Dr. Zion Zibly of Greenwich Hospital.

Doctors say the condition can show up as a slight tremor or shakiness and can also start on one side of the body.

Signs to watch out for include stiffness, having difficulty moving, an expressionless face and handwriting becoming smaller and harder to read. Some people also experience issues sleeping and dreaming.

Less obvious signs of Parkinson's are a stooped posture, loss of smell and getting dizzy when standing up.

The earlier the disease is identified, the sooner patients can start treatment to alleviate symptoms and slow down the progression of the condition. There is also a new high-tech treatment available that is an alternative to surgery.