Evidence of irritation or compression of nerves or blood vessels: 1st cervical vertebra Insufficient blood supply to the brain, dizziness, drowsiness, head shaking, headache, forgetfulness, lethargy; 2nd cervical vertebra Headache, dizziness, tinnitus, eye pain, blurred vision, strabismus, nasal congestion, insomnia, tachycardia; 3rd cervical vertebra Vertigo and dizziness, migraine, trigeminal neuralgia, visual impairment, loss of hearing, swallowing discomfort, atrial fibrillation; 4th cervical vertebra Pillow drop, eruption, sore throat, nausea, weak vision, bad breath; 6th cervical vertebra Thoracic pain, bradycardia, wheezing, fluctuating blood pressure, hoarseness of voice, eruption, bad breath náuseas, ambliopia, dormência em todas as mãos; dores na coluna cervical 5 torácica, bradicardia, chiado, flutuação da pressão arterial, rouquidão da voz, erupção, halitose; espinha cervical 6 tosse e chiado, dor de garganta, flutuação da pressão arterial, amígdalas aumentadas; coluna cervical 7 dor de garganta, asma, falta de ar e aperto no peito, doença da tiróide, doença de Raynaud.