anxiety disorder panic disorder An anxiety disorder that is characterized by unexpected and repeated episodes of intense fear accompanied by physical symptoms that may include chest pain, heart palpitations, shortness of breath, dizziness, or abdominal distress. DOID:594 EFO:0004262 MESH:D016584 NCI:C34890 OMIM:167870 OMIM:607853 OMIM:609985 SNOMEDCT_US_2016_03_01:191705007 SNOMEDCT_US_2016_03_01:192400001 SNOMEDCT_US_2016_03_01:268627007 SNOMEDCT_US_2016_03_01:371631005 UMLS_CUI:C0030319 Xref MGI. disease_ontology panic anxiety syndrome