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The Role of Mental Health in Criminal Defense

by | Mar 10, 2025 | Criminal Defense Lawyer, Legal Tips |

There are many factors that can influence the decision to commit a crime, and one of the most significant is mental health. In the United States, hundreds of individuals struggle with mental health disorders, and those with serious conditions like schizophrenia or depression account for 3–5% of violent crimes.

If you have been charged with a crime and are dealing with a mental illness, addressing your mental health is crucial to building a strong defense strategy.

Discover how mental health affects criminal cases

When someone is accused of a crime, the legal system assumes they acted with intent and full awareness. However, mental illness can significantly impact a person’s ability to understand right from wrong, control their behavior, or even participate in their own defense.

For instance, individuals experiencing psychosis may commit an act they believe is necessary to protect themselves from a perceived threat. Others suffering from severe depression or anxiety might make irrational decisions under emotional distress. These situations highlight the need for a legal defense that takes mental health into account.

Legal Defenses Involving Mental Health

There are several ways mental health can be used in a defense strategy:

  • Insanity Defense: This argument claims that the defendant was unable to understand the nature of their actions due to severe mental illness. In Florida, this defense can lead to treatment instead of prison time. 
  • Diminished Capacity: This strategy does not forgive the defendant of responsibility but argues that their mental state impaired their ability to form intent. This can sometimes lead to lesser charges or reduced sentencing. 
  • Incompetency to Stand Trial: If a defendant is unable to understand the legal proceedings or assist in their own defense due to mental illness, the court may delay the trial until they are deemed competent. 

The Importance of Mental Health Evaluations

In cases where mental health is a factor, a thorough evaluation by a licensed psychologist or psychiatrist is essential. These evaluations help determine whether the defendant was suffering from a mental illness at the time of the crime and assess their current mental state.

A strong mental health evaluation can provide critical evidence to support a defense strategy or influence sentencing. For example, if a defendant with bipolar disorder committed a crime during a manic episode, this evidence can help demonstrate that their actions were not intentional.

A recent case in South Miami demonstrates how mental health can play a role in criminal defense: The suspect was accused of attempting to kidnap two women outside South Miami Hospital. Surveillance footage showed him physically restraining one of the victims, and prosecutors described his behavior as calculated and dangerous. However, his attorney argued that he was in the middle of a severe mental health crisis and had been diagnosed with schizophrenia. While the judge ultimately denied his bond, the suspect case highlights the complexities of addressing mental health within the legal system

Common Mental Health Conditions in Criminal Defense Cases

  • Post-Traumatic Stress Disorder (PTSD): Often seen in veterans or survivors of trauma, PTSD can lead to aggressive or defensive behavior in stressful situations.
  • Schizophrenia: This condition can cause hallucinations and delusions that impact decision-making.
  • Bipolar Disorder: Manic episodes can lead to impulsive and risky behavior, while depressive episodes can result in poor judgment.
  • Substance Abuse Disorders: Often co-occurring with other mental health conditions, addiction can play a significant role in criminal behavior.

How Mental Health Can Impact Sentencing

Even when mental health doesn’t lead to an acquittal, it can play a role in sentencing. Judges may consider a defendant’s mental health history as a mitigating factor, which can lead to lighter penalties or alternative sentencing options.

In some cases, individuals are referred to mental health courts or diversion programs that focus on rehabilitation and treatment rather than punishment. This approach not only helps the defendant but also reduces the likelihood of reoffending.

Contact a Criminal Defense Attorney Today

If you or a loved one is facing criminal charges and mental health is a factor, having the right legal representation is crucial. Criminal defense lawyer Russell A. Spatz of the Spatz Law Firm, PL, in Miami, Florida, has decades of experience handling serious criminal cases. He understands the complexities of the legal system and is committed to ensuring that your mental health is considered every step of the way.

Contact him at 305-442-0200 to discuss your case and ensure you have the protection and vigorous representation you need.

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