A painful headache affects Jean-Luc Picard
Benjamin Sisko suffers severe headaches in 2373
Aheadache was classed as a mild to severepain in thehead. Its causes were often vascular. (ENT: "Observer Effect") Medical advances made headaches uncommon or rare by the24th century. (TNG: "The Battle")
In2151,Sub-CommanderT'Pol toldDoctorPhlox that she was developing a slight headache as an excuse to spend more time in adecontamination chamber. (ENT: "Sleeping Dogs")
InAugust2152,EnsignTravis Mayweather reported to Doctor Phlox that he had been having a little headache for the past couple of days. Though he merely wanted a simpleanalgesic to relieve it, Phlox, affected by the unusualradiation emanating from atrinary star system, insisted on running a series of elaborate scans on Mayweather and even performing acerebral micro-section on hisbrain. The procedure, fortunately, was never performed, though Phlox's scans did provide T'Pol with insight as to how the radiation was affecting the crew of theEnterprise. (ENT: "Singularity")
InDecember2153,CorporalAmanda Cole reported to Doctor Phlox, complaining of a mild headache that she had been experiencing for about a week. Unable to find any other cause, Phlox suspected that the cause may have beenVulcan neuro-pressure inexpertly performed byCommanderCharles Tucker III. (ENT: "Harbinger")
In an illusion created by theTalosians, in whichVina portrayed thewife ofChristopher Pike, Vina, who was attempting to live within that false reality, told Pike of the recurring "headaches" she got whenever he talked "strangely", in reference to his speaking of the Talosians. When she spoke of "children", he reminded her that "These headaches, they'll behereditary, you know. Would you wish them on a child or a whole group of children?" (TOS: "The Cage")
In2267,LieutenantLindstrom suffered from a headache due to "the natural result of being subjected to ahypersonic." (TOS: "The Return of the Archons")
CaptainKirk complained of a headache during the encounter with theKlingons atDeep Space Station K-7. Upon arriving insickbay, Dr.McCoy provided apill, and asked whether the headache was due toBaris or the Klingons. (TOS: "The Trouble with Tribbles")
A hangover was a type of headache that was usually experienced after the person recovered from the consumption of too manyalcoholic beverages, but could sometimes accompany the consumption or theinhalation of any type of mind-altering substance. Apparently thechief engineer of theUSSEnterprise,Lieutenant CommanderMontgomery Scott, was well aware, as a confirmed non-teetotaler, this well-known aftereffect of the consumption of too much alcohol. In2269, after theEnterprise'sventilation system had been cleared of the remnants ofHarry Mudd'slove potioncrystals and he got over his temporary infatuation withLieutenantM'Ress, Scott complained of a "hangover to shame all previous hangovers". (TAS: "Mudd's Passion")
CaptainPicard experienced a headache when he was under the influence of athought maker. (TNG: "The Battle")
Picard also had a headache after hisassimilation by, and later release from, theBorg in2367. (TNG: "The Best of Both Worlds, Part II")
That same year,Keiko O'Brien used the term "headache" as a euphemism for her experience doing anisozyme study on some populations ofcardilia, stating "What a headache." (TNG: "Night Terrors")
Early stages of the loss of her empathic sense due to the presence of thetwo-dimensional beings were massive headaches, as experienced byDeanna Troi. Several otherUSSEnterprise-D crewmembers were also so afflicted. (TNG: "The Loss")
In2368,Beverly Crusher asked Keiko O'Brien if she'd suffered headaches as a consequence of hermemory probe by theUlians. She hadn't. (TNG: "Violations")
By 2368,Geordi La Forge'sVISOR had caused him to experience headaches on several occasions, for which he receivedtreatment. (TNG: "Cause And Effect")
DoctorJulian Bashir experienced a headache after theconsciousness from theKobliadcriminalRao Vantika wasbeamed out of hisbrain. (DS9: "The Passenger")
In2370, while beingexamined by Bashir, areplicant ofMiles O'Brien claimed that he was getting a bad headache at that moment, implying Bashir was the cause. (DS9: "Whispers")
Later that year,Elim Garak experienced headaches prior to his collapse inQuark's. (DS9: "The Wire")
While in close proximity to atype-4 quantum singularity in2371, a number of crewmembers of theUSSVoyager reported to sickbay with headaches, includingEnsignHarry Kim. (VOY: "Parallax")
In a delusion experienced byThe Doctor in 2371, a holographic version ofKathryn Janeway complained of "one hell of a headache. (VOY: "Projections")
B'Elanna Torres complained of a bad headache in2373, for which The Doctor begrudgingly gave her an analgesic. (VOY: "The Swarm")
Also in 2373, when the consciousness ofTieran possessed the body ofKes, her own consciousness brought to bear every effort she could to resist him. As she tormented him in hissleep, she noted that the headaches alone were almost more than he could bear. (VOY: "Warlord")
Benjamin Sisko suffered severe headaches in 2373 following exposure to aplasma burst from aholosuite console. The headaches were associated with oddsynaptic potentials andpost-neural shock syndrome, and also with a series of prophetic visions. Eventually, aneuropolaric induction was required to correct the condition. (DS9: "Rapture")
In Lieutenant CommanderTuvok'sInsurrection Alphaholonovel, aholographic version of CommanderChakotay stated that the thought of spending seventy years onVoyager with Tuvok gave him a headache. (VOY: "Worst Case Scenario")
Dominionvirtual sensory displays caused headaches inHumans. (DS9: "A Time to Stand")
Janeway frequently complained that theparadoxes associated withtime travel gave her a headache, as she did in 2373 and2375. (VOY: "Future's End", "Relativity")
Janeway also experienced continuous headaches in 2374 when theSrivani were performing experiments on her regarding how well she could handle stress and pain. (VOY: "Scientific Method")
In2376, afterSeven of Nine spoke of having downloaded six months ofUSSVoyagerstatus reports into her newcortical processing subunit whileregenerating,Tom Paris commented that he had once tried "learn while you sleep", but it only gave him a headache. (VOY: "The Voyager Conspiracy")