Treatment of TB Adrenalitis
Treat TB adrenalitis with the standard 6-month anti-tuberculosis regimen (rifampicin and isoniazid for 6 months, supplemented by pyrazinamide and ethambutol for the first 2 months), combined with lifelong glucocorticoid replacement therapy for adrenal insufficiency. 1
Anti-Tuberculosis Chemotherapy
The British Thoracic Society guidelines explicitly recommend the standard 6-month regimen for extrapulmonary tuberculosis at "other sites" including genitourinary and disseminated disease 1. While adrenal TB is not specifically named, it falls under this category of extrapulmonary TB. The American Thoracic Society/CDC guidelines similarly support a standard 6-month regimen for disseminated tuberculosis, noting that adjunctive corticosteroids are indicated for adrenal insufficiency caused by disseminated TB 2.
Standard Regimen Components:
- Intensive phase (2 months): Rifampicin + Isoniazid + Pyrazinamide + Ethambutol daily
- Continuation phase (4 months): Rifampicin + Isoniazid daily
The fourth drug (ethambutol) should be included if drug resistance is suspected or the patient is from an area with high rates of isoniazid resistance 1.
Glucocorticoid Replacement Therapy
Critical pitfall: Unlike other forms of extrapulmonary TB, adrenal TB causes permanent destruction of adrenal tissue, resulting in primary adrenal insufficiency (Addison's disease) that requires lifelong hormone replacement 3, 4, 5.
Hormone Replacement Protocol:
- Hydrocortisone or prednisone replacement must be initiated immediately upon diagnosis
- Recent case series show that 66% of patients with adrenal TB required cortisol replacement therapy 3
- Replacement is lifelong, even after successful TB treatment completion 4, 5
The evidence shows that while anti-TB treatment can normalize adrenal size and improve cortisol levels somewhat, many patients develop irreversible adrenal damage requiring permanent replacement 6, 5. One Tibetan cohort found that only 6 of 13 patients who completed anti-TB treatment could discontinue glucocorticoids 5.
Monitoring and Follow-up
Baseline Assessment:
- Measure morning cortisol and ACTH levels to confirm primary adrenal insufficiency
- Check electrolytes (expect hyponatremia and hyperkalemia)
- Obtain CT imaging showing bilateral adrenal enlargement with or without calcifications 4, 7
- Screen for concurrent pulmonary or other extrapulmonary TB
During Treatment:
- Monitor liver function as per standard TB treatment protocols 1
- Reassess adrenal function at 6 months post-treatment completion 6
- CT imaging at 6 months can document reduction in adrenal size 6
Special Considerations
Drug interactions: Rifampicin is a potent enzyme inducer and may increase glucocorticoid metabolism, potentially requiring higher replacement doses during active TB treatment 2.
Adrenal crisis prevention: Educate patients on stress-dosing of glucocorticoids during illness, surgery, or trauma. Adrenal crisis remains a life-threatening complication even after TB cure 8, 9.
Treatment duration: Unlike TB meningitis which requires 12 months of therapy, adrenal TB responds to the standard 6-month regimen 1, 2. However, the hormonal consequences persist indefinitely.
The evidence consistently shows that early diagnosis and prompt initiation of both anti-TB therapy and glucocorticoid replacement improves outcomes 3, 4, 5. The combination approach addresses both the infectious process and the endocrine emergency, with cure rates of 34% and improvement in 66% of reported cases 3.