Stress polycythemia.
D000328:Adult; D001007:Anxiety / Q000503:physiopathology*; D001772:Blood Cell Count; D001810:Blood Volume; D001811:Blood Volume Determination; D006400:Hematocrit; D006452:Hemoglobinometry; D006801:Humans; D008297:Male; D011086:Polycythemia / Q000097:blood / Q000209:etiology*; D011603:Psychophysiology; D013312:Stress, Physiological / Q000097:blood / Q000150:complications*