Central Nervous System Vasculitis Due to Substance Abuse.

Area of Science:

• Neurology
• Toxicology
• Infectious Diseases

Background:

• Acquired central nervous system vasculitis is a serious condition.
• Illicit drug abuse is a frequent consideration in diagnosing CNS vasculitis.
• Few histopathologically confirmed cases link specific illicit drugs to vasculitis.

Purpose of the Study:

• To review the major classes of illicit drugs associated with acquired central nervous system vasculitis.
• To explore these associations in both human immunodeficiency virus type-1 (HIV-1) infected and non-infected individuals, including those with acquired immune deficiency syndrome (AIDS).

Main Methods:

• Literature review of histopathologically confirmed cases.
• Analysis of drug classes implicated in CNS vasculitis.
• Comparison of findings in HIV-1 positive and negative populations.

Main Results:

• While illicit drug abuse is a common differential diagnosis, histopathologically confirmed cases of drug-induced CNS vasculitis are infrequent.
• Various classes of illicit drugs have been implicated.
• The presence or absence of HIV-1 infection and AIDS may influence the presentation or diagnosis.

Conclusions:

• Illicit drug abuse remains an important, albeit uncommon, cause of acquired CNS vasculitis.
• Further research is needed to fully elucidate the mechanisms and specific agents involved.
• Consideration of drug-induced vasculitis is crucial in the differential diagnosis, especially in at-risk populations.