Cerebral infarction as initial manifestation of meningovascular neurosyphilis in an immunocompetent patient - A case report with long term follow-up.

To present a 29-year-old immunocompetent patient with neurosyphilitic changes characterized by multiple acute ischemic brain strokes along with significant narrowing of several large intracranial arteries. Ceftriaxone treatment for 14 days followed by benzathine benzylpenicillin weekly for additional 3 weeks, showed improvement in meningovascular changes.

A Case of Cotard Syndrome and Neurosyphilis

BACKGROUND: Cotard syndrome is a rare neuropsychiatric condition in which individuals have delusions of being deceased or losing their organs. It is often seen in patients with severe depression and is associated with catatonia.1 Neurosyphilis is a severe sequelae of untreated treponema pallidum infection in which the paretic form of this disorder commonly has a psychiatric presentation. 2 We present a rare case of Cotard syndrome in a patient with neurosyphilis with successful treatment. OBJECTIVE: To understand Cotard syndrome and underlying neuropsychiatric conditions, and characterize the diagnosis and management of psychiatric symptoms in a patient with neurosyphilis. METHODS: Review of a case using electronic medical records and relevant literature. Key terms searched: 'Cotard syndrome,' 'neurosyphilis,' 'COVID-19 infection' using Medscape and Google Scholar. RESULTS: We present a 49-year-old male with a history of alcohol use disorder in remission, depression, and history of COVID-19 (asymptomatic) 6 months prior. The patient presented to the emergency department for recent changes in behavior. He was agitated, threatening, and required chemical and physical restraint. Evaluation was notable for illogical thought processes with somatic delusions. He repeatedly stated, 'I am already dead, my organs have died,' and had an episode of catatonia. All tests including drug screen and COVID-19 were negative. Rapid plasma regain (RPR) titer was 1:64. Neurology and Infectious Disease were consulted. Lumbar puncture revealed positive venereal disease research laboratory (VDRL) titer of 1:4. The patient was diagnosed with neurosyphilis and major depressive disorder with psychosis with Cotard syndrome. He was treated with intravenous (IV) penicillin G and was discharged on oral mirtazapine 30 mg and olanzapine 20 mg nightly at bedtime, oral donepezil 5 mg daily, thiamine, and folate. CONCLUSIONS: Cotard syndrome is often seen in depression with psychotic features.1 Neurosyphilis can present with depression, anxiety, psychosis, and dementia. Early identification is the key for successful treatment. This is a unique case of neurosyphilis with features of Cotard syndrome in a patient with a history of depression with treatment noncompliance. Studies show that quetiapine and risperidone improve psychosis in neurosyphilis.5 In this case, neurosyphilis was successfully treated with IV penicillin G for 2 weeks. The patient was also tried on antipsychotics and mood stabilizers ' specifically aripiprazole, valproic acid, and haloperidol ' and was eventually stabilized on oral olanzapine 20 mg taken nightly at bedtime. Our differential diagnosis also included COVID-19 delirium with Cotard syndrome, which was ruled out due to a negative COVID test. To our knowledge, there are 2 cases of COVID-19 delirium with Cotard syndrome.6 We present this case to inform clinicians of rare manifestations of neurosyphilis in patients with comorbid psychiatric illness and to advance research into treatment options for psychosis in neurosyphilis.

Neurodegenerative proteinopathies associated with neuroinfections.

Infectious agents, including viruses and bacteria, are proposed to be involved in the pathogenesis of Alzheimer's disease (AD). According to this hypothesis, these agents have capacity to evade the host immune system leading to chronic infection, inflammation, and subsequent deposition of Aß and phosphorylated-tau in the brain. Co-existing proteinopathies and age-related pathologies are common in AD and the brains of elderly individuals, but whether these are also related to neuroinfections remain to be established. This study determined the prevalence and distribution of neurodegenerative proteinopathies in patients with infection-induced acute or chronic inflammation associated with herpes simplex virus (HSV) encephalitis (n = 13) and neurosyphilis (n = 23). The mean age at death in HSV patients was 53 ± 12 years (range 24-65 years) and survival was 9 days-6 years following initial infection. The mean age at death and survival in neurosyphilis patients was 60 ± 15 years (range 36-86 years) and 1-5 years, respectively. Neuronal tau-immunoreactivity and neurites were observed in 8 HSV patients and 19 neurosyphilis patients, and in approximately half of these, this was found in regions associated with inflammation and expanding beyond regions expected from the Braak stage of neurofibrillary degeneration. Five neurosyphilis patients had cortical ageing-related tau astrogliopathy. Aß-plaques were found in 4 HSV patients and 11 neurosyphilis patients. Lewy bodies were observed in one HSV patient and two neurosyphilis patients. TDP-43 pathology was absent. These observations provide insights into deposition of neurodegenerative proteins in neuroinfections, which might have implications for COVID-19 patients with chronic and/or post-infectious neurological symptoms and encephalitis.

Neurosyphilis and the Jarisch-Herxheimer reaction: A therapy concern with HIV disease.

Jarisch-Herxheimer reaction (JHR) should be anticipated in treating neurosyphilis with coexistent human immunodeficiency virus (HIV) encephalitis. In that context we have devised a staging classification for JHR. In addition, an illustrative case is provided to emphasize the need to consider the diagnosis of neurosyphilis in HIV patients, and if delineated, to be prepared for a severe JHR.