indigestion, heartburn, nightmare, stomach ache, problem, earache, irritant, quandary, stomachache, pain, backache, dilemma, toothache, conundrum, complication, symptom, bugbear, hangover, irritation, stumbling block, discomfort, aggravation, distraction, cough, nausea, anxiety, dizziness, hassles, migraines, bellyache, fogginess, sore throat, embarrassment, annoyance, trouble, boon, setback, constipation, obstacle, chore, sinus headache, itching, postnasal drip, impediment, traffic jam, nosebleeds, thorn, agita, hiccup, inconvenience, hyperacidity, bottleneck, ache, sinusitis, sleeplessness, jeebies, rashes, bugaboo, difficulties, worry, insomnia, drawback, paraesthesia, challenge, inflamation, hindrance, spastic colon, deja vu, sore, pitfall, godsend, hurdle, nagging, mess, catarrh, bogeyman, tingling, chills, runaround, hiatus hernia, belly ache, roadblock, bloating, jitteriness, achy, vomiting, tiredness, malady, diarrhea, tonic, paresthesia, numbness, rhinorrhea, bummer, gripe, skin rash, pangs, decongestant, strain, fluey, drowsiness, vertigo, headaches, colds, cramps, cramp, migraine, bouts, convulsions, spasms, palpitations, concussion, anginal, postoperative, postsurgical, ulcer, antacid, burn, congestive, dementia, emetic, osteoporosis, perioperative, reflux, antidepressant, antifungal, audiologic, cluster

burden, business, cluster headache, encumbrance, hemicrania, histamine headache, incumbrance, load, megrim, onus, sick headache, tension headache

., acromegalia, acromegaly, altitude, apc, aural, bad, brucellosis, cephalitis, chinese restaurant syndrome, chiropractic, cluster headache, differential diagnosis, encephalitis, gibraltar fever, giddy, gulf war syndrome, head cold, hemicrania, herpangia, histamine headache, legionnaires' disease, malta fever, mediterranean fever, megrim, meningitis, migraine, ozone sickness, parathion poisoning, persian gulf illness, phrenitis, ratbite fever, recurrent fever, relapsing fever, rickettsialpox, rock fever, sham, sick headache, sinus headache, tension headache, undulant fever

aching, negative stimulus

cephalalgia, concern, head ache, vexation