What causes scattered spotted lesions in both lungs?

Under normal circumstances, scattered pulmonary nodules in both lungs may be caused by environmental factors, smoking, pneumonia, tuberculosis, pulmonary fibrosis, and other reasons. Symptomatic treatment through general care and medication may be necessary. If physical discomfort occurs, prompt medical consultation and treatment are recommended. Detailed explanations are as follows:

1. Environmental Factors

Long-term exposure to environments with high levels of dust during work or daily life may irritate lung tissues, leading to scattered nodules in both lungs. These nodules could represent reactive changes in the lungs due to harmful substances like dust, which may cause no obvious symptoms or may manifest as coughing and sputum production. It is recommended to improve the living environment, avoid dusty areas, and wear masks to reduce dust inhalation.

2. Smoking

Harmful substances in cigarettes, such as nicotine, can damage the lung mucosa, trigger inflammatory responses, and lead to scattered nodules in both lungs. Symptoms may include coughing, sputum production, and difficulty breathing. It is recommended to quit smoking and maintain a healthy lifestyle, including balanced nutrition and regular sleep patterns.

3. Pneumonia

Pneumonia is an infectious lung disease caused by pathogens such as bacteria or viruses. It leads to inflammatory lesions in the lungs, presenting as scattered nodules in both lungs. Patients typically experience symptoms such as coughing, sputum production, and fever. It is recommended to follow medical advice and use medications like amoxicillin capsules, ribavirin granules, and acyclovir for treatment.

4. Tuberculosis

Tuberculosis is a chronic respiratory infectious disease caused by Mycobacterium tuberculosis infection in the lungs. It results in tuberculous lesions in the lungs, presenting as scattered nodules in both lungs. Patients may experience typical tuberculosis symptoms such as coughing, sputum production, and low-grade fever. It is recommended to follow medical guidance and use medications such as isoniazid tablets, rifampicin capsules, and streptomycin sulfate for injection in treatment.

5. Pulmonary Fibrosis

Pulmonary fibrosis is a diffuse lung disease characterized by fibroblast proliferation and destruction of the normal structure of lung tissue. It may lead to scattered nodules in both lungs, with symptoms such as dyspnea, coughing, and sputum production. It is recommended to follow medical instructions and use medications such as pirfenidone capsules, nintedanib soft capsules, and prednisone acetate tablets to alleviate symptoms.

In daily life, maintaining good living habits and nutrition, enhancing immunity, and reducing the risk of disease are recommended.

References

[1] Chang Minli, You Shuping, Chen Xiaodie, et al. Discriminant analysis of patients with tuberculosis and pneumonia based on machine learning [J/OL]. Journal of Anhui Medical University, 2025, (03): 507-514 [2025-03-17].

[2] Liu Qing. How should severe pneumonia in children be treated correctly? [J]. Health Must-Read, 2025, (08): 23-24.