What are the precursors to smog disease?

Smoker’s disease is an abnormal vascular network disease of the base of the brain, often without precursor symptoms. Some patients may suffer from upper respiratory tract infections, tonsillitis, vasculitis, and craniocerebral injuries before the onset of the disease.
Smokey’s disease is most common in children and young adults, with a high incidence in the 5’s and 40’s. The cause of the disease is unknown, but genetic factors play an important role.
The disease is usually disseminated, and some patients may have upper respiratory tract infections, tonsillitis, vasculitis, craniocerebral injuries and other diseases before the disease, and after the disease, the main clinical symptoms are transient ischemic attack (TIA), stroke, headache, seizures and mental retardation.
Patients with smog disease should consult a doctor in time, under the guidance of the doctor, to avoid bacterial infection, and pay attention to daily rest.