Pulmonary nodules are round or irregular-like lesions in the lungs that show increased density on imaging and can be single or multiple. This condition is seen as a result of a variety of conditions, such as infection, dust, and tumors.
In the case of infected lung nodules, it may be a sequela of an infectious disease such as pneumonia, tuberculosis, or other causes. Lesions such as lung nodules or striated shadows may remain due to incomplete absorption when the condition recovers. The above causes of lung nodules are not related to hair coloring.
Lung nodules may be related to long-term inhalation of dust particles and other substances, and may also be caused by lung tumors. Lung tumors are related to long-term smoking, air pollution, genetic factors, etc., but there is no clear correlation with hair dyeing.
However, hair coloring may have some damage to the human body. Since hair dyes may contain benzene and other substances, frequent hair coloring may also have some effects on the skin and may cause scalp allergies.