Ah! Well that’s a question. So homeopathy works on an individual level, it looks at you as a person, all your symptoms and habits and arrived at a remedy that covers all issues. So this blog was a simple acute situation and we know the cause (concussion) so we give Arnica as this is excellent for brain injuries, swellings, strokes etc. Sleep issues have a myriad of potential causes and I’m guessing it’s not a sudden thing? For this the only way to find the correct remedy is by having an appointment and going through everything. We homeopaths are very nosy! We need lots of info to find a constitutional remedy that is right for you.