Question juridique clé
Whether the insurer remained liable for treatment and diagnostic costs after 2003-12-17 because the headaches were still naturally caused by the 2002 accident.
Solution extraite
The natural causal link had fallen away by the relevant date; the insurer was no longer liable for the later complaints.
Motifs extraits
There was no treatment of the post-commotional complaints after mid-April 2003, the MRI findings were unrelated to the accident, and later headaches alone did not establish ongoing causation on the balance of probabilities.