# Extensively Drug-Resistant Tuberculosis With Treatment-Limiting Mood Disorder: A Case of Complex Regimen Selection and Mental Health Challenges

## TL;DR

A man with drug-resistant tuberculosis and a mood disorder required a carefully tailored treatment plan to manage both his physical and mental health.

## Contribution

This case highlights the challenges of treating XDR-TB in patients with psychiatric comorbidities and drug allergies.

## Key findings

- The patient's XDR-TB treatment was complicated by resistance to key drugs and a pre-existing mood disorder.
- A multidisciplinary approach was essential to balance effective TB treatment with mental health management.
- The patient showed early clinical improvement and was stabilized with continued outpatient care.

## Abstract

Extensively drug-resistant tuberculosis (XDR-TB) presents a significant therapeutic challenge due to resistance to both first-line and several second-line anti-tuberculosis drugs. Treatment planning becomes even more complex when psychiatric comorbidities and drug hypersensitivities further limit the therapeutic arsenal.

This case describes a 41-year-old man with a history of prior incarceration and incompletely treated multidrug-resistant tuberculosis, who presented with pulmonary symptoms and was subsequently diagnosed with XDR-TB. Drug susceptibility testing revealed extensive resistance, including to bedaquiline, clofazimine, and moxifloxacin. A pre-existing mood disorder necessitated the avoidance of neurotoxic agents such as cycloserine, and allergic reactions to several antibiotics led to further regimen modifications.

This case underscores the clinical difficulty of managing XDR-TB in the setting of psychiatric illness and drug intolerance. A multidisciplinary, individualized approach was crucial in designing a regimen that strikes a balance between antimicrobial effectiveness and mental health considerations. The patient demonstrated early clinical improvement and was discharged in stable condition with continued outpatient follow-up.