Sartorius et al developed the Hidradenitis Suppurativa Severity Score (HSSS) to describe clinical extent of disease in a patient with hidradenitis suppurativa. The authors are from Karolinska Institutet in Stockholm and the University of Copenhagen.

NOTE: The original HSSS is copyright Sartorius and Lapins, 2008.


Regions that may be affected include:

(1) axillae

(2) groin

(3) gluteal region

(4) other sites



(1) number of regions affected

(2) number of affected regions showing Hurley III changes (lesions are not separated by normal skin)

(3) total number of nodules present

(4) total number of fistulae present

(5) size of the affected region (as determined by the longest distance between 2 lesions)


total score =

= ((total number of regions affected) * 3) + ((number of regions showing Hurley III changes) * 9) + (number of nodules present) + ((number of fistulae present) * 6) + (number of sites with maximum distance < 5 cm) + ((number of sites with maximum distance 5 to 10 cm) * 3) + ((number of sites with maxumum distance > 10 cm) * 9)



• minimum score: 0

• maximum score: very high

• The higher the score the more severe the disease involvement.

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