central sleep apnea syndrome central sleep apnea caused by high altitude https://github.com/monarch-initiative/mondo/issues/8957 central sleep apnea due to high-altitude periodic breathing MEDGEN:884045 central sleep apnea due to high altitude SCTID:91441000119109 MONDO:0024360 UMLS:C4075997 This term is also called "central sleep apnea due to high-altitude periodic breathing". However, this term is not the same concept as "central sleep apnea due to periodic breathing" MONDO:0024359 (PMID:27920092; PMID:31604817) A central sleep apnea syndrome induced by sleeping at an altitude higher than 2000 m. Central sleep apnea is caused by improper signaling from the brainstem to the respiratory muscles and is triggered by either hypoventilation or hyperventilation. Clinical signs include snoring, insomnia or hypersomnia, difficulty concentrating, and fatigue. Recurrent episodes of hypoxia/hypoxemia have long-term detrimental effects on cardiovascular health. high altitude-induced periodic breathing