<unk>  typically presents unilaterally at a single joint of the anterior chest wall, with 70% of patients having tenderness and swelling on only one side, usually at the 2nd or 3rd rib. Research has described the condition to be both sudden and gradual, varying by the individual. Pain and swelling from<unk>  are typically chronic and intermittent and can last from a few days to several weeks. The most common symptom of<unk>  is pain, primarily in the chest, but can also radiate to the shoulder and arm. The pain has been described as aching, gripping, neuralgic, sharp, dull, and even described as "gas pains". The symptoms of<unk>  have been reported to be exacerbated by sneezing, coughing, deep inhalation, and overall physical exertion. Tenderness and swelling of the affected joint are important symptoms of<unk>  and differentiate the condition from costochondritis. It has also been suggested that discomfort can be further aggravated due to restricted shoulder and chest movement.
Tietze syndrome
Costochondritis
Galloway Mowat syndrome
Zechi-Ceide syndrome
Mungan syndrome
Schimmelpenning syndrome
Antley–Bixler syndrome
Havana syndrome