Posts in category LENS Treated Disorders

The Same Medications for Different Psychiatric Disorders. Why?

How Do Drugs From 1 Psychiatric Disorder Treat Symptoms of Another

How is it that Lamotrigine, an antiepileptic, can help depression, a seemingly different disorder altogether? And why can Prozac, an antidepressant, help reduce anxiety? Or an antipsychotic for schizophrenia help depression? In other words, how is it that drugs for one type of major psychiatric disorder treat the symptoms of another type?

The root causes of psychiatric illnesses such as bipolar disorder, major depression, schizophrenia, autism and ADHD are far from understood. Even so for more than 125 years, clinicians have based diagnosis on groups of symptoms observed in patients. Many psychiatrists have thought for a long time now that the current categories don’t really make sense, and that new categories should be based not on symptoms but on the underlying biology.

Moving in that direction more than 300 scientists at 80 research centers in 20 countries scientists have now found that the five psychiatric disorders mentioned above share a common genetic basis. The overlap of these disorders was highest between schizophrenia and bipolar; moderate for bipolar and depression and for ADHD and depression; and low between schizophrenia and autism.

These findings still leave much of the inherited genetic contribution to the disorders unexplained. And none of this accounts for the non-inherited genetic factors that go into determining what a person is like. However, they demonstrate  that science is now moving toward understanding the molecular basis of psychiatric illness, which could provide insight into the biological pathways that may predispose someone to health or disease. All this could ultimately lead to new treatments.

Genetic inheritance does not mean our fate is carved in stone, i.e. that because we are wired in a particular way genetically our fate is sealed. This is because it has become increasingly clear over the last 10 years or so that environmental factors determine which of our genes are “turned on” and which are “turned off”. In the scientific literature this is often spoken of as which genes are “expressed” and which are not. Whether your genes are turned on or turned off matters just as much as much as which genes you have.

Drugs In War

Drugs In WarThe following is based on an article in the NY Times on 4/6/13 by Richard Friedman, MD.

→ Wars On Drugs

The Use Of Psychoactive Drugs In War

Last year, more active-duty soldiers committed suicide primarily from depression and addictions than died in battle. Another statistic, only somewhat less startling, is that drug prescribing for the use of psychoactive drugs in the military between 2005 and 2011 rose nearly 700 percent. These include antipsychotics, sedatives, stimulants and mood stabilizers. In particular, prescriptions written for antipsychotic drugs for active-duty troops increased 1,083 percent while the civilian population increase was just 22 percent. This increase in medication is taking place despite a steady reduction in combat troop levels since 2008.

This brings up that possibility that military doctors might be prescribing psychoactive drugs to enable soldiers to function better in combat. And although antipsychotic drugs have been used off-label in the treatment of insomnia, anxiety and aggressive behavior, we have no idea whether they’re effective — or safe — to use on a continuing basis to treat war-related stress and anxiety or to numb or sedate those affected by it.

Furthermore, while the military (and others) uses antipsychotic drugs to treat post-traumatic stress disorder (PTSD), there is weak evidence that these drugs are an effective treatment for it. In  2007, PTSD was the most common off-label diagnosis for the use of psychoactive medications. Yet a recent clinical trial involving 300 veterans found that the antipsychotic risperidone to be no more effective than a placebo in treating PTSD.

In treating soldiers who have PTSD symptoms with antipsychotic medications, the military might be violating its own treatment guidelines, In February 2012, the assistant secretary of defense for health affairs, Dr. Jonathan Woodson, wrote in a memo to the military’s leadership that the “greatest concern is the suspicion of the over-prescription of antipsychotic medications for PTSD.”

Prescription Drugs In War

There are additional concerning prescription trends in the military. For example:

  • The number of prescriptions written for potentially habit-forming anti-anxiety medications — like Valium and Klonopin — rose 713 percent between 2005 and 2011.
  • The use of sedating anticonvulsants — Topamax, Neurontin and Lyrica — increased 996 percent during this period.
  • The limited use of antidepressants, which are generally at least moderately effective in treating the symptoms of depression, anxiety and PTSD.  Antidepressant prescriptions dropped by 48 percent between 2006 and 2009. Since both depression and PTSD are associated with increased suicide risk, it is conceivable that this drop played a role in increasing suicide rates among troops.
  • Increasing evidence that the military favors quick-acting — and less effective — anticonvulsants and antipsychotics over antidepressants, which can take weeks to work.

Another reason to be concerned regarding liberal off-label use of antipsychotic medications is long-term adverse health risks, including tardive dyskinesia, a potentially irreversible movement disorder.

Medical oversight is required in the development of new treatment guidelines for combat-related syndromes like traumatic brain injury (TBI), PTSD, depression and stress-related disease. Increased oversight might also identify innovative off-label uses of psychotropic drugs that would benefit both our troops and the general population.