BACKGROUND: Paroxysmal finger haematoma (also known as "Achenbach syndrome") is 
a benign condition resulting in the sudden appearance of bruising on one or more 
fingers, either spontaneously or after minimal trauma, and resolving without 
treatment. To date, less than 40 cases have been reported.
PATIENTS AND METHODS: We report two cases of women aged over 50 years presenting 
for sudden onset of digital haematomas occurring spontaneously without any prior 
trauma. Laboratory and radiological tests appeared to be normal for both 
patients. History-taking and clinical and laboratory data pointed towards a 
diagnosis of spontaneous paroxysmal finger haematoma. Each episode resolved 
spontaneously but, as is generally seen, recurrences occurred during follow-up.
DISCUSSION: In the absence of known aetiologies and/or treatments for 
spontaneous paroxysmal finger haematomas, a knowledge of this rare condition can 
at least help doctors reassure their patients by diagnosing their condition and 
pointing out the benign nature thereof. It also helps avoid costly and 
unwarranted additional investigations.