In case of severe blow in head, it's good to use links of brain to kidneys
and massage to kidneys reflex zones helps the trauma:
zones for kidneys on the right image, Insect
Besides, massage and heating the whole path
for spinal column on finger will help drive away
the harmful energy from brain.
Finger of choice may be:
--- ring finger left hand - finger of Burn,
the energy for brain and nerv. system
--- ring finger right hand - finger of Cold,
main trauma energy.
Brain is controlled by energy of Burn and kidneys by energy of Cold; Burn and Cold energies are in axis relation.
Besides, several hours since trauma, general trauma energy
becomes energy of Cold, so working on kidneys helps