This site is targeted at medical and radiology professionals, contains
user contributed content, and material that may be confusing to a lay
audience. Use of this site implies acceptance of our
Coup de poignard of Michon refers to spinal subarachnoid haemorrhage, usually as a result of a spinal AVM.
Presentation is with sudden excruciating back pain, akin to being stabbed with a dagger (poignard = french for dagger). It is the corollary of the thunderclap headache.
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling
||Include in Listings?
|coup de poignard of Michon
The version of Internet
Explorer you are using is not supported. Download links for more modern
web browsers are provided below.
If you do not have administrator rights to update your browser you may
want to use a portable browser, either from a USB flash drive or a