title: A case with chronic fatigue syndrome with positive antinuclear antibody followed by postpartum thyroiditis.
abstract: Autoimmune fatigue syndrome (AIFS) is defined by chronic nonspecific complaints, a positive antinuclear antibody (ANA) assay, and the absence of another explanation for the complaints. Some severe cases fulfill the criteria for chronic fatigue syndrome (CFS). CFS is a syndrome characterized by disabling severe fatigue and defined by the criteria proposed by the U.S. Centers for Disease Control and Prevention. In this report, a patient with chronic fatigue syndrome and positive ANA assay was described as having developed postpartum thyroiditis 5 years after the onset. Sub-chemical hypothyroidism is characterized by clinical hypothyroidism not meeting biochemical criteria but showing evidence of thyroid autoimmunity. The relation between AIFS and sub-chemical hypothyroidism is discussed.
authors.affiliation: Department of Pediatrics, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan. yasuhiko@nms.ac.jp
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Itoh
authors.forename: Hisamitsu
authors.initials: H
authors.lastname: Hamada
authors.forename: Tohru
authors.initials: T
authors.lastname: Igarashi
authors.forename: Natsuko
authors.initials: N
authors.lastname: Kuwabara
authors.forename: Taiyo
authors.initials: T
authors.lastname: Imai
authors.forename: Osamu
authors.initials: O
authors.lastname: Fujino
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Fukunaga