CIRCADIAN RHYTHMS

   Circadian rhythm frequently reveal abnormal patterns in autistic individuals (Yamazaki et al, 1975).

   Of course, they are also altered in hypothyroidism (Gruneiro-Papendieck et al, 1998; Pishak,1998;Kuboto et al, 1993).

See also: Melatonin

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Gruneiro-Papendieck L, Chiesa A, Martinez A, Heinrich JJ, Bergada C - "Nocturnal TSH surge and TRH test response in the evaluation of thyroid axis in hypothalamic pituitary disorders in childhood" Horm Res 50(5):252-7(1998) http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=9873192&form=6&db=m&Dopt=r

Kubota M, Shinozaki M, Sasaki H - "Circadian rhythm disturbance after radiotherapy for brain tumor in infantile period--clinical effect of L-thyroxine and vitamin B12" No To Shinkei 45(8):759-63  (1993) http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8217401&form=6&db=m&Dopt=r

Pishak VP, Krivich NV - "Biological rhythms of the kidney excretory
function in patients with hypothyreosis" Biull Eksp Biol Med 125(6):684-7  (1998) http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=9693768&form=6&db=m&Dopt=r

Yamazaki K, Saito Y, Okada F, Fujieda T, Yamashita I - "An application of neuroendocrinological studies in autistic children and Heller's syndrome" J Autism Child Schizophr 5(4):323-32  (1975) http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=173703&form=6&db=m&Dopt=r