Introduction 

Tietze syndrome is a rare, frequently misdiagnosed disorder that results in localised swelling and inflammation at the costochondral junctions, which are where the ribs connect to the sternum (1). Chest pain from this disorder can be severe, raising the possibility of more serious disorders, including heart disease. Although German surgeon Alexander Tietze was the first to identify it in 1921, the precise causes are still unknown. Researchers have put forth a number of risk factors and possible triggers that could lead to its occurrence.¹

Despite being regarded as a benign disease, Tietze syndrome's pain and swelling can have a major influence on a person's day-to-day activities, making it difficult to breathe, exercise, or even perform basic arm movements. Patients frequently go through lengthy medical evaluations before being diagnosed, since their symptoms might mirror those of life-threatening diseases like angina or heart attacks. Young adults are the most frequently affected, and there is no particular gender preference. Some people have recurring or persistent symptoms, but many cases go away on their own.¹

Understanding tietze syndrome

Mostly affecting young adults under 40, Tietze syndrome is categorised as a benign, non-infectious inflammatory condition of the costal cartilages. The incidence of this relatively uncommon illness is mostly unclear because of underdiagnosis. Although Tietze syndrome is often confused with costochondritis, a more prevalent cause of chest pain, the illness is distinguished by localised swelling at the afflicted costochondral joints.¹

Common symptoms of tietze syndrome

The primary symptoms of Tietze syndrome include:

• Localised pain: Sharp or aching pain centred around the costochondral junctions, most often affecting the second or third ribs. The pain may worsen with movement, deep breathing or physical activity¹
• Swelling: One of the key distinguishing features of Tietze syndrome is the presence of visible swelling at the affected site, which is absent in costochondritis. The swelling may persist even after the pain subsides¹
• Tenderness: Pressing on the inflamed cartilage exacerbates pain, which helps differentiate it from cardiac-related chest pain¹
• Radiation of pain: The discomfort may spread to the shoulders, arms or upper back, mimicking symptoms of angina or other heart-related conditions¹

Potential causes and triggers

Microtrauma and repetitive stress

Tietze syndrome is thought to be largely caused by microtrauma, or minor recurrent injuries, according to one of the most frequently accepted theories. The costochondral joints may become locally inflamed as a result of these repetitive pressures.^1,2 

Microtrauma can result from the following activities:

1. Weightlifting and jobs involving a lot of pushing and pulling are examples of heavy lifting
2. High-impact sports: Exercises that put repetitive effort on the upper body, such as tennis, gymnastics, and rowing, might put more strain on the rib cage
3. Chronic coughing: Asthma and chronic bronchitis cause frequent, violent coughing, which repeatedly strains the rib cage

The hallmark symptoms of Tietze syndrome can develop as a result of the costal cartilage becoming irritated and swollen over time due to this continuous mechanical pressure.^1,2

Direct trauma or chest injury

Another potential cause is acute trauma to the chest. The costal cartilage may experience localised inflammation, oedema and pain as a result of abrupt hits. The following are some instances of trauma that might result in Tietze syndrome:

1. Car accidents: The chest region may sustain injuries from airbag deployment or seatbelt impact
2. Sports injuries include: tackles, falls and direct hits in contact sports such as boxing, rugby and football
3. Surgical procedures: The costochondral connections may sustain damage as a result of chest surgeries, such as open heart surgery or lung operations

Chronic inflammation that lasts after the original trauma can result from damage to the costal cartilage that interferes with normal healing.³

Respiratory infections and chronic coughing

Tietze syndrome has been associated with infections, especially those that impact the respiratory system. The ribs and costal cartilages may be strained by the vigorous breathing and prolonged coughing that are linked to illnesses like pneumonia or bronchitis. In those who are vulnerable, this strain may cause localised inflammation. Among the circumstances linked to elevated risk are:

1. Viral illnesses (common cold or influenza)
2. Bacterial infections (tuberculosis or pneumonia)
3. Chronic respiratory conditions (asthma or COPD)

According to research, Tietze syndrome may occasionally be preceded by the inflammation brought on by infections.⁴

Autoimmune and inflammatory disorders

Tietze syndrome has been linked to autoimmune disorders, in which the body's immune system unintentionally targets its own tissues. Among the inflammatory conditions that may make people more vulnerable are:

1. Rheumatoid arthritis (RA) is a long-term inflammatory condition that mainly affects joints; however, cartilage may also be affected
2. Ankylosing spondylitis is a form of arthritis that mostly affects the ribs and spine, causing inflammation and stiffness
3. Psoriatic arthritis: An inflammatory condition of the cartilage that is linked to psoriasis

Although Tietze syndrome is not an autoimmune disease in and of itself, some experts think that those who already have inflammatory diseases may be more vulnerable.^1,5,8

Risk factors for developing tietze syndrome

Certain individuals may be more prone to developing Tietze syndrome based on specific risk factors. These include:

1. Age 

Tietze syndrome is most commonly observed in young adults under the age of 40, with a peak incidence between 20 and 30 years. It is rarely seen in older adults. This age-related phenomenon raises the possibility that younger people are more vulnerable to cartilage inflammation, either as a result of variations in cartilage composition or higher amounts of physical activity.¹

2. Gender

Although it is not generally agreed upon, some research indicates a somewhat higher occurrence in females. It could be due to variations in muscle composition or hormones. The development of the illness in women may also be influenced by changes in oestrogen levels, which have an impact on musculoskeletal function and inflammation. To prove a clear connection between gender and Tietze syndrome, more investigation is necessary.⁶

3. Occupation and Physical Activity

The risk of costochondral strain can be raised by occupations that involve repetitive upper body movement, such as manual labour, assembly-line work and construction. Athletes and high-intensity trainers, particularly those who participate in contact sports, weightlifting or other activities that put the chest wall under constant stress, may also be more vulnerable. Costochondral junction pain and inflammation can develop over time as a result of severe mechanical stress.^2,7

4. Chronic Health Conditions

Asthma, bronchitis, or COPD are examples of pre-existing respiratory disorders that can raise the risk since they cause chest stress and frequent coughing. Coughing frequently puts a lot of strain on the costal and ribcage cartilages, which, over time, may cause discomfort and inflammation. Furthermore, persistent inflammatory conditions like ankylosing spondylitis or rheumatoid arthritis may make people more susceptible to cartilage inflammation; however, this link is still mostly conjectural.^1,4,8

Conclusion

Tietze syndrome remains a poorly understood condition, with multiple potential causes and contributing factors. While mechanical stress, trauma, respiratory infections and inflammatory diseases are among the leading hypotheses. Recognising possible risk factors can help in early diagnosis and management, preventing unnecessary medical anxiety and extensive diagnostic testing.

Although generally self-limiting, Tietze syndrome can significantly impact quality of life, especially when misdiagnosed as more serious conditions such as cardiac disease. The chest pain associated with Tietze syndrome often leads to distress and may require reassurance from healthcare providers that the condition is not life-threatening. However, due to the lack of definitive diagnostic markers, many patients endure prolonged uncertainty before receiving an accurate diagnosis.

Further research is needed to fully understand the pathophysiology of this syndrome and develop targeted treatment strategies. Increasing awareness among both medical professionals and the general public may lead to earlier recognition, better symptom management and improved outcomes for those affected by this rare but impactful condition.