Lightening flash can cause injury by all of the following, except -
Reff: The synopsis of forensic medicine & Toxicology 28th editipn pg: 173 Direct effect from electrical discharge passing to the eah surface produces 'flash burns', mechanical effect due to force of displaced air and compression effect due to air movement in its return wave produces the changes.
Direct effect of electric current
Super heated air
Expanded and repelled air
Compressed air pushed in front of the current
Thermal injury