Inclusion Criteria:
* For the opportunistic infection treatment group: Inclusion criteria: a) Age ≥ 18 years, diagnosed with HIV-1 infection; b) Clinically diagnosed with one of the following opportunistic infections and initiating anti-infective therapy: PCP, tuberculosis, NTM infection, CMV infection, herpes simplex virus and varicella-zoster virus infection, toxoplasmosis encephalopathy, oral fungal infection, cryptococcal meningitis, Marneffei basket disease, PML; c) Intending to initiate ART therapy or currently receiving ART therapy; d) The individual (or their legal representative) voluntarily signs a written informed consent form.
* For the non-opportunistic infection group: a) Age ≥ 18 years, diagnosed with HIV-1 infection; b) Intending to start ART treatment or currently receiving ART treatment; c) The individual (or legal representative) voluntarily signs a written informed consent form.
Exclusion Criteria:
* For the opportunistic infection treatment group: Exclusion criteria: a) Individuals suffering from major neurological or psychiatric illnesses such as schizophrenia, epilepsy, or severe depression; b) Individuals with a history of drug use or recent history of alcohol or drug dependence; c) Individuals deemed unsuitable for participation by researchers, such as those in the acute phase of severe cardiovascular disease; d) Individuals deemed unsuitable for participation by other researchers; e) Individuals whose long-term follow-up requirements and frequency cannot be guaranteed.
* For the non-opportunistic infection group: a) Individuals with coexisting opportunistic infections; b) Individuals suffering from major neurological or psychiatric illnesses such as schizophrenia, epilepsy, or severe depression; c) Individuals with a history of drug use or recent history of alcohol or drug dependence; d) Individuals deemed unsuitable for participation by researchers, such as those in the acute phase of severe cardiovascular disease; e) Individuals deemed unsuitable for participation by other researchers; f) Individuals whose long-term follow-up requirements and frequency cannot be guaranteed.
