What is the Penn Spasms Frequency Scale (PSFS, Penn Spasm Frequency Scale)?

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From the Guidelines

The Penn Spasms Frequency Scale (PSFS) is a valuable tool for measuring the frequency and severity of muscle spasms in patients with neurological conditions, and its use is supported by recent clinical practice guidelines 1.

Key Points

  • The PSFS consists of a 5-point rating scale where 0 indicates no spasms and 4 represents severe, frequent spasms occurring more than 10 times per hour.
  • Healthcare providers recommend using the PSFS for monitoring spasticity in conditions such as multiple sclerosis, spinal cord injury, cerebral palsy, and stroke.
  • The scale helps clinicians track changes in spasm frequency over time and evaluate the effectiveness of antispasmodic medications like baclofen, tizanidine, or diazepam.
  • Recent evidence supports the use of botulinum toxin for patients with focal spasticity depending on patient characteristics and preferences 1.
  • The PSFS is valuable because muscle spasms significantly impact quality of life, causing pain, disrupting sleep, and limiting mobility, making accurate measurement crucial for effective management.

Implementation

  • Patients or caregivers should record spasm frequency daily at consistent times, noting any triggers or patterns.
  • This documentation provides valuable objective data that guides treatment decisions and medication adjustments.
  • The use of the PSFS in conjunction with other treatment modalities, such as botulinum toxin or oral antispasmodics, can help improve patient outcomes and reduce the impact of muscle spasms on quality of life 1.

From the Research

Penn Spams Frequency Scale (PSFS) Overview

  • The Penn Spams Frequency Scale (PSFS) is not directly mentioned in the provided studies.
  • However, the studies discuss spasticity, its treatments, and management options, which may be related to the PSFS.

Spasticity and Its Treatments

  • Spasticity is a velocity-dependent increase in muscle tone and uncontrolled, repetitive, involuntary contractions of skeletal muscles 2.
  • Treatments for spasticity include oral medications, interventional procedures, and surgical treatments 2, 3.
  • Common medications for spasticity include benzodiazepines, dantrolene sodium, baclofen, tizanidine, and botulinum toxins 3, 4.

Management of Spasticity

  • The management of spasticity involves a multidisciplinary approach, including physical therapy, occupational therapy, orthotics, rhizotomy, and orthopedic surgery 4.
  • Botulinum toxin therapy is a preferred treatment for focal spasticity, and intrathecal baclofen is used for generalized spasticity 5, 6.
  • Patient selection for intrathecal baclofen and/or botulinum toxin type A treatment is crucial, and experts have developed an algorithm to aid in this selection process 6.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

A Review of Spasticity Treatments: Pharmacological and Interventional Approaches.

Critical reviews in physical and rehabilitation medicine, 2013

Research

Pharmacotherapy of spasticity in children with cerebral palsy.

Journal of the Formosan Medical Association = Taiwan yi zhi, 2011

Research

The Use of Botulinum Toxin for Treatment of Spasticity.

Handbook of experimental pharmacology, 2021

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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