Advice and Treatment in Switzerland:

The Swiss Huntington Centre in Siloah (in Gümligen, near Bern) offers comprehensive counselling and treatment by a multidisciplinary team in outpatient and inpatient settings (acute treatment and long-term care): https://www.siloah.ch/neurozentrum/schweizerisches-huntington-zentrum/
The Huntington department in Letzipark in Zurich offers comprehensive advice and long-term care: https://www.tertianum.ch/de/tertianum-letzipark-zuerich
The Huntington Foundation promotes research and offers support in special situations: www.stiftung-shv.ch

Accompaniment and counselling for people with disabilities and chronic illnesses: Verein myPeer

International Associations:  

European Huntington Association EHA: http://eurohuntington.org
European Huntington Disease Network EHDN: http://www.ehdn.org
Huntington’s Disease Youth Organisation HDYO: www.hdyo.org
The Huntington Association of France: www.huntington.fr

Further Information:

HD-Buzz: HD research in multiple languages : http://en.hdbuzz.net