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Precordial catch syndrome
Precordial catch syndrome (PCS), also known as Texidor's twinge, is a common cause of chest pain in children and adolescents. It also occurs, though less frequently, in adults. PCS manifests itself as a very intense, sharp pain, typically at the left side of the chest, generally in the cartilage between the bones of the sternum and rib cage, which is worse when taking breaths. Oftentimes the symptoms are described as a "bubble in the chest" sometimes associated with the feeling of a "bubble popping" or cracking sensation which usually resolves the pain. Patients often think that they are having a heart attack which causes them to panic. This pain typically lasts from a few seconds to a few minutes, though, in some cases, it can persist for up to 30 minutes. The frequency of episodes varies from patient to patient; sometimes occurring daily with multiple episodes each day, or on a less frequent basis with weeks, months, or even years between episodes. On rare occasions, breathing in or out suddenly will cause a small "bubble" popping or cracking sensation in the chest, which results in the pain going away. In most cases the pain is resolved quickly and completely, and medication is not needed for the pain to subside. There is no known treatment or cure for PCS.
== Signs and symptoms ==
PCS has consistent characteristics. Its symptoms begin with a sudden onset of anterior chest pain on the left side of the chest. The pain is localized and does not radiate like heart attack pain typically does. Breathing in, and sometimes breathing out, often intensifies the pain. Moving also intensifies the pain. Typically this causes the patient to freeze in place and breathe shallowly until the episode passes. Episodes typically last a couple of seconds to three minutes. In some cases it lasts for 30 minutes. The frequency of episodes varies by patient, sometimes occurring daily, multiple episodes each day, or more spread out over weeks, months, or years between episodes. PCS is believed to be localized cramping of certain muscle groups. Intensity of pain can vary from a dull minor pain, to intense sharp pain possibly causing momentary vision loss/blurriness and often loss of breath.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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