HD symptoms are usually sorted into three major categories: motor, psychiatric, and cognitive. This section describes treatments for many HD symptoms.

Motor Symptoms are further divided into chorea which is an excess of involuntary movements, and rigidity (bradykinesia or dyskinesia) which is a slowing of voluntary movement. Chorea is often more prominent in early disease, and rigidity more prominent in later stage disease.

Psychiatric Symptoms are broadly divided into six categories: mood disorders (depression and manic depression), anxiety disorders (anxiety and obsessive compulsive disorder), behavioral disorders (impulsivity, irritability and aggression), thought disorders (psychosis and delirium), apathy, and insomnia.

Cognitive Symptoms include difficulty with "thinking" skills that are involved in the ability to plan and organize thoughts. Memory is less affected.