high pressure neurological syndrome https://www.malacards.org/card/high_pressure_neurological_syndrome UMLS:C0019537 MONDO:0002570 MEDGEN:5553 DOID:3230 MESH:D006610 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. central nervous system disorder