The specific risk factors are unknown.
Studies include both men and women, children and older adults, and can affect people from any ethnicity. There does not appear to be a strong indication that HE/SREAT affects any particular ethnic group or age group.
However, females do stand out as the group most likely to be stricken with HE/SREAT1 (as well as other autoimmune conditions). According to the study, “Gender differences in autoimmune disease“, the study states, “Gender differences that exist in autoimmunity follow a female bias.“2
There have also been a handful of studies describing the presentation of HE/SREAT in patients with Down Syndrome.3 This is not to suggest that individuals with Down Syndrome may have a higher likelihood of developing HE/SREAT, however, a sudden or acute onset of psychiatric symptoms such as hallucinations in the presence of elevated anti-thyroid titers may warrant increased suspicion.
1 “Hashimoto encephalopathy: A study of the clinical profile, radiological and electrophysiological correlation in a Tertiary Care Center in South India”
S.T. Ngo, F.J. Steyn, P.A. McCombe
Last edited by Web Team on June 20th, 2016