<P> The underlying cause is unclear . Some believe the pain may be from the chest wall or irritation of an intercostal nerve . Risk factors include psychological stress . The pain is not due to the heart . Diagnosis is based on the symptoms . Other conditions that may produce similar symptoms include angina, pericarditis, pleurisy, and chest trauma . </P> <P> Treatment is via reassurance . The pain resolved without any specific treatment . Outcomes are good . Precordial catch syndrome is relatively common . Children between the ages of 6 and 12 are most commonly affected . Both males and females are affected equally . It is less common in adults . The condition was first described in 1955 . </P> <P> 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 1 hour . 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 . </P> <P> The cause of PCS is unknown . Miller and Texidor suggested that the pain may originate in the parietal pleura of the lungs . The pain is most likely not of cardiac origin . </P>

Sharp pains in left side of chest when inhaling
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