Phrenic Nerve Infiltration in Neck Pain

Neck pain frequently present comorbidities in peridiaphragmatic organs. The innervation of these organs include the phrenic nerve. It is known that peridiaphragmatic organs trigger referred pain in the neck area. As well, previous studies have shown that visceral disorders increase sensitization in somatic tissues. This study aims to analyze the ability of phrenic nerve infiltration to diminish sensitization and improve neck symptoms in the absence of neurological, traumatic or infectious pathology that justifies the pain, by means of a randomized controlled trial.

Inclusion Criteria:Over 18 and under 64 years oldPatients attending to the physician or physical therapist with a main complaint of neck painPresentation of any peridiaphragmatic visceral disorder.That the subject agrees to participate in the project by signing the informed consent.Exclusion Criteria:Illness of neurological, traumatic, oncological, infectious or rheumatic (fibromyalgia, ankylosing spondylitis...) origin.Uncooperative subject.Severe psychiatric illness.Loss of Cognitive Ability.Contraindication to infiltration of the phrenic nerve.History of head, spinal or upper limb surgeryHistory of infiltration for the neck pain in the previous 3 monthsHistory of physical therapy for the neck pain in the previous 30 days