About HESA


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The Hashimoto’s Encephalopathy SREAT Alliance is a 501(c)(3)  nonprofit organization formed in 2012. It is HESA’s mission to collect, archive, and share information regarding Hashimoto’s Encephalopathy (“HE”), also known as Steroid Responsive Encephalopathy Associated with Thyroiditis (“SREAT”) or simply Autoimmune Encephalopathy (“AE”) with the public and medical professionals.

Other names used to describe  HE/SREAT are Nonvasculitic Autoimmune Meningoencephalitis (“NAIM”), and Encephalopathy Associated with Autoimmune Thyroid Disease (“EAATD”).  HESA takes no position on the most appropriate name for the disease, however on this website the abbreviation “HE” is generally used as a shorthand way to refer to the condition.

HESA has published a book, “Understanding Hashimoto’s Encephalopathy” which is available for sale at  HESA also raises funds to support scientific research, and is planning a documentary film project. HESA’s website provides information and links to a variety of resources for patients, physicians, caregivers, and others interested in this poorly understood disorder. We appreciate your fully tax-deductible donations (see the Donate link above).  Please also consider purchasing a HESA cookbook, featuring easy to prepare recipes submitted by HE patients. All proceeds go to support HESA.


This website is not a substitute for independent professional advice. Nothing contained in this site is intended to be used as medical advice. No content are intended to be used to diagnose, treat, cure or prevent any disease, nor should it be used for therapeutic purposes or as a substitute for your own health professional’s advice.

This site does not employ and is not evaluated by a medical professional. Articles and studies are linked to for personal reference, not to provide advice, diagnosis, or treatment of any medical condition or suspected medical condition.

Although you will find a great deal of information about HE/SREAT on this website, this site is intended to provide information only. HESA cannot provide medical advice. If you have HE/SREAT, or think you may have it, consult a qualified neurologist, preferably one with experience addressing immune-mediated illness. HESA shall not be held responsible for the contents of links to studies, their errors, omissions, or any malicious software they may contain.

All information is provided for your personal use and research without warranty.