Recognizing and Responding to Adverse Medication Effects

Why Adverse Medication Effects Matter in Psychiatric Settings

Psychiatric technicians work closely with patients who take powerful medications every day. Some of these medications carry a risk of serious, even life-threatening, adverse effects. Because psychiatric technicians spend more direct time with patients than almost any other staff member, they are often the first person to notice that something is wrong. Early recognition and a clear escalation report can prevent permanent harm or death. This lesson covers five priority adverse effects you must be able to recognize and respond to correctly.

Neuroleptic Malignant Syndrome (NMS)

NMS is a rare but potentially fatal reaction most often associated with antipsychotic medications. The four classic findings are:

• High fever (often above 38 °C / 101 °F, sometimes much higher)
• Severe muscle rigidity — the muscle may feel like lead pipe or plastic
• Altered mental status — confusion, agitation, or decreased consciousness
• Autonomic instability — rapid heart rate, unstable blood pressure, heavy sweating

NMS can develop over hours to days after starting or increasing an antipsychotic dose. It is a medical emergency. Do not leave the patient alone. Notify the charge nurse or on-call provider immediately. Stop any physical restraint that could raise body temperature further.

Serotonin Syndrome

Serotonin syndrome results from excess serotonin activity, most commonly when two or more serotonergic drugs are combined (for example, an SSRI with certain pain medications or another psychiatric medication). Look for the triad of:

• Neuromuscular changes — muscle twitching (myoclonus), incoordination, hyperreflexia, tremor
• Autonomic changes — rapid heart rate, high blood pressure, fever, diarrhea
• Altered mental status — anxiety, agitation, confusion

Serotonin syndrome can progress quickly. Severity ranges from mild to life-threatening. Report immediately to the charge nurse. A key distinguishing feature from NMS is that muscle rigidity in serotonin syndrome tends to involve lower-extremity clonus and hyperreflexia rather than the generalized lead-pipe rigidity of NMS — but in practice your job is to recognize that something serious is happening and escalate, not to diagnose.

Tardive Dyskinesia (TD)

Tardive dyskinesia is a movement disorder caused by long-term use of medications that block dopamine receptors, most often antipsychotics. It typically develops after months or years of use. Signs include:

• Repetitive, involuntary movements of the face (lip smacking, tongue protrusion, grimacing)
• Writhing or jerking movements of the limbs or trunk

TD is not an acute emergency in the way NMS or serotonin syndrome is, but it must still be reported promptly because early recognition may allow the prescriber to adjust treatment and prevent the condition from becoming permanent. Document the movements accurately — location, type, frequency. Report to the charge nurse.

Lithium Toxicity

Lithium has a narrow therapeutic window, meaning the difference between a therapeutic dose and a toxic dose is small. Early signs of toxicity include:

• Nausea, vomiting, diarrhea
• Hand tremor (coarse tremor is more concerning than fine)
• Drowsiness or confusion

More serious toxicity adds:

• Ataxia (unsteady gait), slurred speech
• Muscle twitching, seizures
• Decreased level of consciousness

Dehydration, certain medications (such as NSAIDs and some diuretics), low-sodium diet, and fever can all raise lithium levels. If a patient on lithium shows any of these findings — especially if they have been ill, sweating heavily, or have changed their fluid intake — report to the charge nurse right away. Blood levels must be checked by nursing or provider order; this is outside your scope, but prompting the report is essential.

Severe Allergic Reaction (Anaphylaxis)

Any medication can trigger an allergic reaction. Anaphylaxis is a severe, systemic allergic response that can be rapidly fatal. Recognize it by:

• Skin changes — hives, flushing, swelling (especially face, lips, tongue, throat)
• Respiratory — wheezing, stridor, difficulty breathing or speaking
• Cardiovascular — rapid or weak pulse, drop in blood pressure, dizziness, loss of consciousness
• Gastrointestinal — sudden nausea, vomiting, cramping

Anaphylaxis is the most time-critical emergency in this lesson. Activate the emergency response (call for help, call a code if your facility protocol requires it) immediately. Do not leave the patient. Stay calm and provide clear information to responders.

The Correct Escalation Sequence

Regardless of the adverse effect, follow this sequence:

1. Ensure the patient is safe — stay with them, lower fall risk, do not apply unnecessary physical force.

2. Collect key observations — what you see, hear, and measure (vital signs if within your scope and time permits).

3. Notify the charge nurse immediately using SBAR.

4. Document your observations and the time you reported, after the immediate situation is managed.

Using SBAR for Escalation

SBAR stands for Situation, Background, Assessment, Recommendation.

• Situation: Who is the patient and what is happening right now? ("I'm calling about Mr. Torres in Room 12. He has a high fever and his muscles are extremely rigid.")
• Background: Relevant history. ("He was started on a new antipsychotic two days ago.")
• Assessment: Your clinical concern. ("I'm concerned this could be a serious medication reaction.")
• Recommendation: What you are asking for. ("I need you to come assess him now.")

Always state the urgency level clearly. Never recommend a medication change or order — that is outside psychiatric technician scope. Your recommendation is for a licensed clinician to assess the patient.

Safety First

Your role is to observe, recognize, report, and support — not to diagnose or prescribe. When in doubt, escalate. It is always safer to report something that turns out to be minor than to delay reporting something serious.