How many people have Sweet’s syndrome?

How many people have Sweet’s syndrome?

Based upon the medical literature available, Sweet’s syndrome probably affects no more than 3 people per 10,000 globally (Zamanian and Ameri, 2007) – a rare disease is a disease that affects less than 5 people per 10,000.

There are no official global statistics to tell us for certain how many people have Sweet’s syndrome, and figures obtained via medical case-studies can vary a lot. According to some of these studies, Sweet’s syndrome could affect as few as 0.27 people per 10,000 in some countries, or up to 3 people per 10,000 in others (Ginarte and Toribio, 2011: 120; Zamanian and Ameri, 2007).

As Sweet’s syndrome can sometimes be triggered by infection, it tends to be more common in countries where infection is poorly controlled or people are more likely to develop infections (Ginarte and Toribio, 2011: 120).

Unlike the similar condition Behcet’s syndrome, Sweet’s syndrome does not affect one racial group more than another.


Ginarte, M. and Toribio, J. (2011) Sweet Syndrome. In Dr. Fang-Ping (Ed.) Autoimmune Disorders – Current Concepts and Advances from Bedside to Mechanistic Insights. Croatia or China: Intech, pp. 119-132 (PDF). 

Zamanian, A. and Ameri, A. (2007) Acute febrile neutrophilic dermatosis (Sweet’s syndrome): a study of 15 cases in Iran. International Journal of Dermatology, Jun;46(6):571-4 (PubMed).

Further information.

Autoinflammatory Alliance (2015) Sweet’s Syndrome (SS); aka Acute Febrile Neutrophilic Dermatosis, Disease Comparison Chart (online).  

Ngan, V. (2002) Behcet disease. DermNet NZ (online). Accessed 4/04/17.

© 2012-2017 Sweet’s Syndrome UK

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