Concussion A concussion was a common injury characterized by a loss of humanoid brain function as a result of a trauma . One of the symptoms was ringing in the ear s . ( ) In 2152 , Commander Charles Tucker III suffered a mild concussion when " " was damaged during the destruction of Paraagan II , but Doctor Phlox believed that he would be fine . ( ) That same year , Ensign Hoshi Sato suffered a severe concussion when was struck by a Romulan orbital mine . She eventually made a complete recovery , but was eager to return to her post , even before Phlox had finished treating her . ( ) In 2153 , Captain Jonathan Archer suffered a concussion after being struck by a spatial anomaly but made a complete recovery . ( ) In 2267 , Chief Engineer Montgomery Scott was thrown against a bulkhead of the , causing a concussion for which he needed rest . ( ) In 2367 , Jono was found to have a low - grade concussion , sustained at some point while engaging in the Talarian s ' rough - and - tumble games . ( ) Soon after , Doctor Beverly Crusher found no indication of a concussion to explain the loss of Deanna Troi ' s empathic abilities . ( ) In 2368 , Soren suffered a concussion when the " Magellan " suffered an inertial damper failure and she was thrown across the shuttlecraft floor . ( ) In 2369 , Tahna Los came aboard Deep Space 9 with a minor concussion after his vessel was destroyed by a Cardassian warship . ( ) According to Doctor Julian Bashir , the illusory Jadzia Dax had a " nasty concussion " after she knocked her head on a console . ( ) In 2370 , Jean Luc Picard was concerned that Voval might have had a concussion following the crash of the Iyaaran shuttle . ( ) Soon after , Bashir found that Melora Pazlar had suffered no concussion following a fall . ( ) " After shifting into an alternate quantum reality that year , Lieutenant Worf had suffered a concussion after being hit over the head in a Bat ' leth competition that he had won in the prime reality . Doctor Crusher recommended vertazine to treat it . " ( ) In 2371 , The Doctor , having just been activated , casually diagnosed an injured crewman as not having a concussion and for him to be cleaned up to resume duty . ( ) Later that year , Tuvok received a concussion following a Komar energy discharge . ( ) Also that year , in a malfunctioning holoprogram , The Doctor visually diagnosed a holographic Kathryn Janeway as having a concussion . ( ) Soon after , Dax was dealt a severe concussion on the by a Changeling . ( ) In 2372 , Captain Benjamin Sisko received a concussion when the " Defiant " came under attack from a Jem ' Hadar warship . ( ) Also that year , Keiko O ' Brien received a concussion when she was thrown against the bulkhead of the . ( ) Soon after , Tierna came aboard " Voyager " with a concussion among other injuries . ( ) In 2373 , Arridor and dealt Ensign a blow that left him with a severe concussion . ( ) Later that year , Neelix received a moderate concussion in a plasma explosion . ( ) Soon after , Neelix was diagnosed with a concussion while trying to aid a Nezu planet being bombarded by asteroid s . ( ) A short while after , Tom Paris suffered a mild concussion when his head struck the side of the " " while trapped in an astral eddy . ( ) In 2374 , was beam ed aboard " Voyager " with a minor concussion . ( ) In 2375 , Paris told Samantha Wildman she had a minor concussion following the crash of the " Delta Flyer " , though he was understating the extent of her injuries . ( ) In 2376 , B ' Elanna Torres suffered a mild concussion in a vision she experienced following a near - death experience . ( ) Later that year , Chakotay was dealt a severe concussion aboard the " Flyer " due to shock wave s from a dark matter asteroid colliding with a graviton ellipse . ( ) In 2378 , while playing the role of the EMH in The Doctor ' s holonovel " Photons Be Free " , Paris treated Lieutenant Marseilles ' concussion . ( ) Sometime later that year , Paris was concerned that Joe Carey might have a concussion after being assaulted the natives on an unidentified planet , but was prevented by from treating him with equipment from his medkit . ( )