Axonal/neuron-injury leads to mass release of neurotransmitters and cellular content. The cellular content stimulates inflammation to "clean" up the lost cells. Some neurotransmitters (like glutamate) when extracellular and Ca2+ ions (when intracellular) case damage on its own if in to great concentrations.

These are toxic and cause some "unneccesary" damage.

The inflammation itself cause damage to healty neurons but is not at all as destructive as it can be in a bacterial infection (bacterial meningitis etc).

Either way.... I think theory behind the idea of treating a concussion/mtbi/tbi with immunodepressants/anti-inflammatory meds are valid.

You should listen to your doctor and report your progress to him.

The concern you have about the debri not being cleaned up properly in your brain and that would cause prolems are unlikely. The cleanup-process will continue later (even after youre off the antiinflam meds) and scartissue instead of dead neurons arent doing to much of a different for your functioning.

If you feel anxious, you should have your doctor explain better.

Emil (med. student)