Why does the left rib cage hurt when inhaling?

Under normal circumstances, pain inside the left rib cage upon inhalation may be related to factors such as a side stitch, muscle strain, intercostal neuritis, pleurisy, or pneumothorax. It is recommended that patients promptly visit a hospital for examination and receive appropriate treatment under a physician's guidance. Detailed explanations are as follows:

1. Side stitch: A side stitch typically occurs during exercise and may result from improper exertion leading to spasms of the intercostal muscles and diaphragm. It is recommended to stop exercising, adjust breathing appropriately, or massage the affected area, as symptoms generally subside gradually.

2. Muscle strain: Vigorous exercise or incorrect posture may cause muscle strain around the left ribs. Pain may occur during respiration due to muscle contraction. Under a physician's guidance, medications such as ibuprofen sustained-release capsules, voltaren capsules (diclofenac sodium), or celecoxib tablets may be used for treatment.

3. Intercostal neuritis: Inflammation of the intercostal nerves may be caused by viral infections, thoracic spine injuries, or other factors. This may result in intermittent or persistent stabbing or burning pain. Medications such as ibuprofen tablets, diclofenac sodium sustained-release tablets, or etoricoxib tablets may be used under medical supervision.

4. Pleurisy: Pleurisy may be caused by infections such as viruses or bacteria. When inflammation affects the left pleura, pain may occur during inhalation due to pleural stretching. Patients should promptly follow medical advice and use medications such as cefuroxime axetil granules, aspirin tablets, or ethambutol hydrochloride tablets for treatment.

5. Pneumothorax: Pneumothorax can cause changes in pressure within the pleural cavity, resulting in pain upon inhalation due to pleural stretching. Patients should use medications such as licorice tablets, Pulilike Syrup, or Suhuang antitussive capsules under a physician's guidance to aid recovery.

In daily life, maintaining a balanced diet and appropriately consuming vitamins and proteins, such as from broccoli and eggs, can help enhance immune function and promote overall health.