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Addressing Psychosis or Mood Disorder in Prader-Willi syndrome

Ask Nurse Lynn: Addressing Psychosis or Mood Disorder

Question:

Female, 58 years old, UPD subtype

This woman is experiencing some behavior issues recently, arguing, aggressiveness, excessive skin picking, and hallucinations. A doctor at University of Louisville Hospital, where she was seen yesterday, has suggested some possible meds for her psyche doctor to consider. The meds are loxapine, clozapine, and depskote. She has a TeleHealth appointment with her psyche doctor tomorrow. Do you have any suggestions?

Nurse Lynn’s response:

Thank you for reaching out and for advocating for this individual. I want to start by saying that I am not a physician or prescriber, so I cannot recommend specific medications. However, I can share some information and suggest questions that may help guide your conversation with her psychiatrist during the upcoming Telehealth appointment.

The behaviors you describe arguing, increased aggression, excessive skin picking, and hallucinations, are important symptoms to evaluate carefully in someone with PWS. Behavioral changes like these can sometimes signal an underlying psychiatric condition, but they can also be triggered by environmental stress, medication effects, medical illness, or disruptions in routine. In PWS, stress sensitivity is very high, and changes in environment, expectations, staffing, or daily structure can significantly affect behavior.

It is also important to remember that individuals with PWS may experience psychosis or mood disorders, sometimes related to an underlying mood cycling disorder. Hallucinations or significant behavioral shifts should always be taken seriously and evaluated thoroughly.

The medications you mentioned—loxapine, clozapine, and Depakote (valproate)—are medications that psychiatrists sometimes use for mood stabilization or psychosis. In PWS, medications can be helpful when a true psychiatric disorder is present, but experts recommend a “start low and go slow” approach because individuals with PWS may experience side effects at lower doses than typical patients.

Before deciding on medication changes, gathering additional information can be very helpful. If possible, consider discussing the following with the psychiatrist:

*Have there been any recent changes in routine, staffing, living situation, or stressors that could be contributing to these behaviors?

*Is there consistent food security in the home or residential environment? Lack of food security or uncertainty around meals can significantly increase anxiety and behavioral dysregulation in PWS.

*What other medications or supplements is she currently taking, including over-the-counter products? Drug interactions can sometimes worsen psychiatric symptoms.

*Has she had recent medical screening (infection, pain, constipation, sleep issues, medication side effects)? Medical problems may present as behavioral changes in PWS.

*What is her past psychiatric medication history? Which medications helped, which caused side effects, and why were they stopped?

*Are the hallucinations new, and how often are they occurring? Are they associated with sleep deprivation, stress, or mood changes?

*Are there behavioral or environmental strategies already in place (structured schedule, behavioral supports, supervision, incentives, sensory activities)? Environmental and behavioral strategies are considered the foundation of treatment in PWS.

Resources:

The upcoming appointment is a good opportunity to review the full clinical picture: behavioral patterns, environmental factors, medical issues, and medication history, before making medication changes. Please see the links below that can provide further guidance.

Psychiatric-information-for-psychiatrists-_C-2018.pdf

Psychotropic-med-tip-sheet-2022.pdf

Mental-Health-and-Behavior-Changes.pdf

PWS Mental Health Guidebook

https://www.fpwr.org/pws-mental-health-guidebook

Mental Health – IPWSO

The-Mental-Health-of-People-with-PWS-T-Holland.pdf

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