Diseases

High Pressure Neurological Syndrome

A syndrome related to increased atmospheric pressure and characterized by tremors, nausea, dizziness, decreased motor and mental performance, and SEIZURES. This condition may occur in those who dive deeply (c. 1000 ft) usually while breathing a mixture of oxygen and helium. The condition is associated with a neuroexcitatory effect of helium.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A syndrome related to increased atmospheric pressure and characterized by tremors, nausea, dizziness, decreased motor and mental performance, and SEIZURES. This condition may occur in those who dive deeply (c. 1000 ft) usually while breathing a mixture of oxygen and helium. The condition is associated with a neuroexcitatory effect of helium.

MeSH Record

Classification

Broader headings

Related Concepts

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See Also

MeSH Record

Synonyms

6 entry terms
  • HPNS
  • High Pressure Nervous Syndrome
  • High Pressure Neural Syndrome
  • HPNSs
  • Experimental High Pressure Neurological Syndrome
  • High Pressure Neurological Syndrome, Experimental

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

in divers; do not confuse with INERT GAS NARCOSIS

MeSH Record

History Note

2000(1986)

MeSH Record

Previous Indexing

  • Atmospheric Pressure (1966-1985)
  • Central Nervous System Diseases (1966-1985)
  • Diving (1966-1985)
  • Pressure (1966-1985)
  • Syndrome (1972-1985)

MeSH Hierarchy

Tree Numbers

  1. C10w.228w.566w
  2. C24w.410w

AMA Style

References

  1. National Library of Medicine. High Pressure Neurological Syndrome. Medical Subject Headings (MeSH). 2026. Unique ID D006610. http://id.nlm.nih.gov/mesh/2026/D006610
  2. High Pressure Neurological Syndrome. In: Wikipedia. https://en.wikipedia.org/wiki/High-pressure_nervous_syndrome
  3. High Pressure Neurological Syndrome. In: Wikidata. https://www.wikidata.org/wiki/Q955638