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PubMed This is a summary of 11 peer-reviewed journal articles Updated
Neurology · Autosomal Dominant Hereditary Spastic Paraplegia

Symptoms and Disease Progression of Pure HSP

At a Glance

Pure Hereditary Spastic Paraplegia (HSP) is characterized by slowly progressive muscle stiffness and weakness, primarily in the legs. Key symptoms include gait changes like scissoring or foot drop, painful cramps, and urinary urgency. The disease usually progresses very slowly over decades.

The hallmark of pure Autosomal Dominant Hereditary Spastic Paraplegia (AD-HSP) is a slow, steady change in how you move. Because the condition primarily affects the corticospinal tracts—the long nerve “wires” that travel from the brain to the lower spinal cord—the symptoms are almost entirely concentrated in the legs [1][2].

Primary Motor Symptoms

The motor symptoms of pure HSP are defined by spasticity and weakness.

  • Progressive Spasticity: This is a type of muscle stiffness where your muscles stay contracted or “tight” [3]. In pure HSP, this typically starts in the calf muscles and the muscles that pull the thighs together (adductors) [4][3].
  • Gait Impairment: As stiffness increases, your walking pattern (gait) changes. You might experience scissoring (legs crossing over each other), foot drop (difficulty lifting toes, leading to tripping), and reduced walking stamina [3][4].
  • Pain and Cramping: While HSP itself is not always directly painful, the severe muscle stiffness can lead to painful muscle cramps, and walking with an altered gait can cause secondary joint and lower back pain over time [3][4].

Overlooked Non-Motor Symptoms

  • Urinary Urgency: One of the most common non-motor symptoms [5][6]. It feels like a sudden, overwhelming need to use the bathroom. The nerves controlling the bladder are located near the leg nerves [7][8].
  • Sensory Changes: Some notice mild “pins and needles” or a decreased sense of vibration in their feet [9].

How the Disease Progresses

The progression of pure HSP is typically very slow [10].

Feature Description
Rate of Change Symptoms usually worsen gradually over years or decades [1].
Stability It is common for the condition to stay relatively stable for long periods [10].
Age of Onset This varies wildly. Some start in early childhood (SPG3A), others in middle age (SPG4) [11][10].

Return to Home.

Common questions in this guide

What are the first signs of pure HSP?
The earliest signs are typically progressive muscle stiffness or tightness in the calves and thighs. As stiffness increases, it often leads to changes in your walking pattern, such as foot drop, tripping, or legs crossing over each other.
How fast does pure HSP progress?
The progression of pure HSP is typically very slow, with symptoms worsening gradually over years or decades. It is also very common for the condition to remain relatively stable for long periods.
Can pure HSP cause bladder problems?
Yes, urinary urgency is one of the most common non-motor symptoms of pure HSP. This occurs because the nerves that control the bladder are located very close to the nerves that control the legs in the spinal cord.
Does pure HSP cause pain?
While the nerve damage itself isn't typically painful, the resulting severe muscle stiffness can lead to painful muscle cramps. Additionally, walking with an altered gait over time can cause secondary pain in your joints and lower back.
How can physical therapy help with pure HSP symptoms?
Physical therapy is a vital tool for managing pure HSP. It focuses on maintaining mobility, reducing muscle stiffness, and preventing secondary joint complications associated with gait changes.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Given my specific mutation, what is the typical rate of progression you see in patients at my age?
  2. 2.Is the urinary urgency I'm experiencing typical for my diagnosis, and what are our options for managing it?
  3. 3.Are there specific physical therapy goals we should focus on now to help maintain my mobility?

Questions For You

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References

References (11)
  1. 1

    Anaesthesia and orphan disease: Management of a case of Strumpell-Lorrain disease and review of the literature.

    Ponsonnard S, Damon A, Gueye EM

    European journal of anaesthesiology 2017; (34(8)):562-563 doi:10.1097/EJA.0000000000000615.

    PMID: 28682816
  2. 2

    Cognitive dysfunction in hereditary spastic paraplegias and other motor neuron disorders.

    Faber I, Branco LMT, França Júnior MC

    Dementia & neuropsychologia 2016; (10(4)):276-279 doi:10.1590/s1980-5764-2016dn1004004.

    PMID: 29213469
  3. 3

    Hereditary Spastic Paraplegia in Alberta: Lessons from a Well-Defined Cohort Including the Indigenous Population.

    Assaedi E, Ashtiani S, Estiar MA, et al.

    Movement disorders clinical practice 2025; (12(9)):1346-1356 doi:10.1002/mdc3.70115.

    PMID: 40322871
  4. 4

    Is intrathecal baclofen an effective treatment for children with hereditary spastic paraparesis?

    Pointon RS, Whelan H, Raza R, Lodh R

    Archives of disease in childhood 2020; (105(10)):1016-1018 doi:10.1136/archdischild-2020-319878.

    PMID: 32732319
  5. 5

    The hereditary spastic paraplegias.

    Fink JK

    Handbook of clinical neurology 2023; (196()):59-88 doi:10.1016/B978-0-323-98817-9.00022-3.

    PMID: 37620092
  6. 6

    Non-motor symptoms in patients with hereditary spastic paraplegia caused by SPG4 mutations.

    Servelhere KR, Faber I, Saute JA, et al.

    European journal of neurology 2016; (23(2)):408-11 doi:10.1111/ene.12839.

    PMID: 26806216
  7. 7

    Hereditary Spastic Paraplegia: Clinical and Genetic Hallmarks.

    de Souza PVS, de Rezende Pinto WBV, de Rezende Batistella GN, et al.

    Cerebellum (London, England) 2017; (16(2)):525-551 doi:10.1007/s12311-016-0803-z.

    PMID: 27271711
  8. 8

    Thalamic atrophy in patients with pure hereditary spastic paraplegia type 4.

    Navas-Sánchez FJ, Fernández-Pena A, Martín de Blas D, et al.

    Journal of neurology 2021; (268(7)):2429-2440 doi:10.1007/s00415-020-10387-4.

    PMID: 33507371
  9. 9

    Comprehensive Characterization of Spastic Paraplegia in Korean Patients: A Single-Center Experience over Two Decades.

    Choi Y, Kim SH, Ahn SJ, et al.

    Yonsei medical journal 2026; (67(1)):34-41 doi:10.3349/ymj.2024.0500.

    PMID: 41431411
  10. 10

    Clinical and molecular characterization of a large cohort of childhood onset hereditary spastic paraplegias.

    Giordani GM, Diniz F, Fussiger H, et al.

    Scientific reports 2021; (11(1)):22248 doi:10.1038/s41598-021-01635-2.

    PMID: 34782662
  11. 11

    A series of Greek children with pure hereditary spastic paraplegia: clinical features and genetic findings.

    Polymeris AA, Tessa A, Anagnostopoulou K, et al.

    Journal of neurology 2016; (263(8)):1604-11 doi:10.1007/s00415-016-8179-z.

    PMID: 27260292

This page explains the symptoms and typical progression of pure HSP for educational purposes. Always consult your neurologist for an accurate assessment of your specific progression and symptom management.

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