Let's be aware of Neuroleptic Malignant Syndrome, a dangerous condition caused by neuroleptic drugs!

You or someone you know may be taking a type of medication called neuroleptic, which is used to treat certain mental health conditions. While these medications can be very helpful for many people, there are very rare cases where these medications can cause a dangerous, even life-threatening condition. That's what we call Neuroleptic Malignant Syndrome (NMS). It's a complicated name, but it's important to know about it.

What is Neuroleptic Malignant Syndrome (NMS)? Let's understand it simply!

Simply put, neuroleptic malignant syndrome (NMS) is a very rare and potentially life-threatening reaction to a class of drugs called neuroleptics (also known as antipsychotic medications). These medications are used to manage and treat the symptoms of many mental health conditions.

Several main symptoms can be seen in this `NMS` condition:

• Having a high fever (hyperthermia).
• The muscles in the body become tight and painful (if this continues, the muscles may even rupture).
• Changes in mental status (such as confusion, memory loss).
• Autonomic nervous system dysfunction or dysautonomia.

Our autonomic nervous system is like the automatic system in our body. It controls things like blood pressure and breathing rate. When it malfunctions, blood pressure can suddenly go up and down, cause excessive sweating (secondary hyperhidrosis), and cause excessive salivation.

NMS is a life-threatening medical emergency, requiring immediate medical attention. Therefore, if you experience these symptoms, the best thing to do is to go to the hospital immediately.

What are these neuroleptic medications?

Neuroleptic medications, or antipsychotic medications, can be divided into two main categories.

1. First-generation or "typical" antipsychotics.

2. Second-generation or "atypical" antipsychotics.

Doctors prescribe these first- and second-generation antipsychotics for a variety of mental and neurological conditions. Here are a few examples:

• Behavioral problems that occur in dementia.
• Bipolar disorder.
• Depression.
• Eating disorders.
• Generalized anxiety disorder.
• Geriatric agitation.
• Insomnia.
• Obsessive-compulsive disorder (OCD).
• Personality disorders.
• Post-traumatic stress disorder (PTSD).
Schizoaffective disorder. Schizophrenia and related diseases.

What medications can cause neuroleptic malignant syndrome (NMS)?

There are several types of medications that can cause `NMS`. Let's take a look at what they are.

Typical neuroleptic (antipsychotic) drugs:

• Bromperidol
• Chlorpromazine `(Chlorpromazine)`
• Clopenthixol
• Fluphenazine `(Fluphenazine)`
• Haloperidol `(Haloperidol)`
• Loxapine
• Promazine
• Thioridazine `(Thioridazine)`
• Thiothixene
• Trifluoperazine `(Trifluoperazine)`

Atypical neuroleptic (antipsychotic) drugs:

• Amisulpride
• Aripiprazole
• Clozapine
• Olanzapine
• Quetiapine
• Risperidone
• Ziprasidone
• Zotepine

Some antiemetic medications:

• Domperidone
• Droperidol `(Droperidol)`
• Metoclopramide
• Prochlorperazine `(Prochlorperazine)`
• Promethazine

Dopaminergic (Parkinson's) medications (by stopping these suddenly):

• Amantadine
• Dopamine agonists
• Levodopa
• Tolcapone

Don't be alarmed by this list. Not everyone who takes these medications will develop NMS. This is a very rare condition. But if you are taking these medications, it is important to be aware of this.

What is the difference between NMS and malignant hyperthermia?

You may have also heard of a condition called malignant hyperthermia. It's also a rare, severe reaction. But it's caused by general anesthesia drugs and muscle relaxants .

It can also cause muscle stiffness, decreased reflexes (hyporeflexia), and skin changes (blueness, redness). These symptoms can be similar to those of NMS. However, doctors can differentiate the two by looking at the patient's medical history. That is, whether they have recently undergone anesthesia or taken a neuroleptic medication.

What is the difference between NMS and Serotonin Syndrome?

Serotonin syndrome is another confusing condition. It is caused by medications that belong to the serotonergic class, such as some antidepressants, amphetamines, antihistamines, and mood stabilizers. Simply put, it occurs when there is too much of a chemical in the body called serotonin.

Symptoms of serotonin syndrome include muscle rigidity, hyperreflexia, diarrhea, sweating, muscle twitching (myoclonus), and mental status changes. However , fever and muscle rigidity are usually less common in serotonin syndrome than in NMS.

Your doctor will distinguish between these two conditions by listening to your symptoms and the medications you are taking.

Who gets neuroleptic malignant syndrome (NMS)?

NMS can occur in anyone taking neuroleptic (antipsychotic) medications.

Although it is thought that about two-thirds of NMS cases occur within the first week of starting neuroleptic medication, it is important to remember that this condition can occur at any time during treatment.

How common is this `NMS` condition?

In fact, neuroleptic malignant syndrome (NMS) is a very rare condition. It occurs in between 0.01% and 3.2% of people taking neuroleptic medications.

However, the good news is that the number of reports of NMS is decreasing due to the introduction of new medications that have a lower risk of causing NMS, and the awareness of doctors and patients about this condition.

What are the symptoms of neuroleptic malignant syndrome (NMS)?

Symptoms of `NMS` usually begin to appear within one to three days . The main symptoms are:

• Very high fever (102 to 104 degrees Fahrenheit - 38.9 to 40 degrees Celsius).
• Heart rhythm irregularities (arrhythmia).
• Increased heart rate (tachycardia).
• Increased respiratory rate (tachypnea).
• Muscle stiffness/stiffness `(muscle rigidity)`.
• Changes in mental status (such as confusion, agitation, loss of consciousness).
• High blood pressure or low blood pressure.
• Excessive sweating.

If you have one or more of these symptoms, especially if you are taking a neuroleptic medication, please call 911 or go to the nearest hospital immediately. This is a medical emergency.

How does neuroleptic medication cause `NMS`?

`NMS` condition is caused by a neuroleptic (antipsychotic) drug.It can occur with a single dose, with an increase in the dose, or with continued use of the same dose. Although NMS is mainly associated with first-generation antipsychotics, it can also occur, to a lesser extent, with the sudden withdrawal of second-generation antipsychotics, some antiemetics, and dopaminergic drugs used for Parkinson's disease.

Scientists are still trying to figure out exactly what causes NMS. The current theory is that it is caused by dopamine D2 receptor antagonism . Dopamine is a neurotransmitter in our brain. It is a chemical that carries messages between cells. Neuroleptic drugs work by blocking this dopamine messenger from entering cells through specific receptors.

When dopamine receptors in your hypothalamus and/or spinal cord are blocked, muscle tension increases. Also, disruption of dopamine receptors in the hypothalamus is what causes the high fever and large fluctuations in blood pressure seen in NMS.

How is neuroleptic malignant syndrome (NMS) diagnosed?

For doctors to diagnose NMS, you must have all of the following symptoms or conditions :

• You are taking a neuroleptic medication or have suddenly stopped taking a dopaminergic medication.
• You have severe muscle tightness/tightness (this can even lead to muscle rupture).
• You have a high fever.
• There is a change in your mental state.

In addition, at least two of the following characteristics must be present:

• Excessive or unusual sweating.
• Difficulty swallowing.
• Inability to control urine or stool (incontinence).
• Increased heart rate (tachycardia).
• Suddenly unable to talk.
• Increased or frequent changes in blood pressure.
• Increased white blood cell count (Leukocytosis).
• Increased levels of creatine phosphokinase (CPK) due to muscle breakdown.
• Slow or limited reflexes (hyporeflexia).

What tests are done to diagnose `NMS`?

If your doctor suspects that you have NMS, they may order tests such as:

• Comprehensive metabolic panel.
• Urinalysis.
• Arterial or venous blood gas test.
• Creatine phosphokinase (CPK) blood test.

How is neuroleptic malignant syndrome (NMS) treated?

NMS is a medical emergency. It is therefore essential to diagnose the condition and start treatment quickly. If you have NMS, you will likely need to be hospitalized.You will need to receive treatment in an intensive care unit (ICU).

In all cases of `NMS`, doctors will immediately stop the neuroleptic (antipsychotic) medication that caused the `NMS`. In addition, they will treat the symptoms of `NMS` and take steps to prevent possible complications. These treatments may include:

• Maintaining cardiac and respiratory stability using mechanical ventilation, antiarrhythmic medications, and/or pacemakers.
• Maintaining electrolyte balance in the body by administering intravenous fluids (IV fluids).
• Lowering body temperature using cooling blankets, ice water, and/or ice packs.
• If blood pressure is high, control it with medication.
• Administering medications such as heparin to prevent blood clotting.
• Administering medications that can restore the body's low dopamine levels.
• Giving muscle or skeletal relaxants.

What are the risk factors for developing `NMS`?

There are several factors that increase the risk of developing neuroleptic malignant syndrome (NMS):

• Starting a new neuroleptic (antipsychotic) medication or increasing the dosage.
• Using more than one neuroleptic medication or using the drug lithium.
• Sudden discontinuation of a dopaminergic drug for Parkinson's disease.

How long will it take to recover from `NMS`? (Prognosis)

If NMS is diagnosed early and treated promptly and properly, most people recover within two weeks to 14 days.

However, if treatment is delayed, severe complications can occur that affect the muscles, kidneys, heart, and/or lungs.

If not treated promptly, NMS can be fatal. The mortality rate for NMS ranges from 5% to 20%. However, increased awareness of NMS and the use of newer antipsychotic medications have reduced this mortality rate in the past few decades.

Many people, under the guidance of a doctor, are able to successfully restart neuroleptic (antipsychotic) medication.

What are the complications of neuroleptic malignant syndrome (NMS)?

Unfortunately, complications of NMS are common and severe. Some complications are caused by the characteristic symptoms of NMS and autonomic nervous system dysfunction, while others, especially infections, can be caused by prolonged stays in the intensive care unit (ICU).

Some of the complications of NMS are:

• Rhabdomyolysis (breakdown of muscle cells - this is the most common complication).
• Dehydration.
• Acute kidney failure.
• Acute respiratory failure.
• Epileptic conditions/ seizures .
• Myocardial infarction.
• Blood clotting throughout the body (Disseminated intravascular coagulation).
• Acute liver failure.
• Pneumonia.
• Sepsis (germs entering the bloodstream).
• Urinary tract infection (UTI).
• Pulmonary embolism.

Because these complications are so severe and life-threatening, it is extremely important to call 911 immediately and go to the nearest hospital for medical treatment if you have symptoms of NMS. Again, NMS is a life-threatening emergency and may require treatment in the Intensive Care Unit (ICU).

When should I see my doctor?

If you are taking one or more neuroleptics (antipsychotics), antiemetics, and/or dopaminergic (Parkinson's) medications, it is important to see your doctor regularly to make sure they are working properly for you. Also, ask your doctor about the side effects of the medications you are taking and what symptoms you should be aware of.

Should I go to the Emergency Department (ETU) if I have symptoms of `NMS`?

If you have symptoms of neuroleptic malignant syndrome (NMS), such as a very high fever and muscle stiffness, it is important to call 911 or go to the nearest hospital immediately. NMS requires immediate medical attention. If not treated quickly and properly, it can even lead to death.

Neuroleptic malignant syndrome (NMS) is a serious, life-threatening condition. So if you have symptoms, it's crucial to seek medical attention as soon as possible. NMS is much easier to treat if it's caught early. Although NMS is rare, if you're taking neuroleptic (antipsychotic) medication, talk to your doctor or pharmacist about side effects and symptoms to watch out for. They're there to help you.

The most important things we learned from this article (Take-Home Message)

Okay, so let's remind you of some of the most important things to keep in mind from what we've talked about in this `NMS`:

• NMS is a rare, but potentially life-threatening condition caused by neuroleptic medications.
• High fever, muscle aches, and mental confusion are the main symptoms.
• If you notice any of these symptoms, seek medical advice immediately. Don't delay.
• If you are taking neuroleptic medication, talk to your doctor about the medication and its side effects. Don't be afraid to ask questions.
• NMS can be completely cured if diagnosed and treated early.

We hope you have been informed by this information. Stay healthy!

` Neuroleptic Malignant Syndrome, NMS, psychiatric drugs, side effects, high fever, muscle stiffness