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Tuberculosis is prevalent throughout the world and is a major public health problem in most developing countries. Standardized and directly observed treatment under NTEP (National Tuberculosis Elimination Programme) is currently recommended for drug-sensitive pulmonary tuberculosis in India. It is generally well tolerated, with few minor side effects. Severe side effects necessitating discontinuation of therapy are rare with standard TB treatment regimens. Drug-resistant tuberculosis (DR-TB) has become more common in recent years, posing a challenge to global efforts to control the disease. Therapy for DR-TB has been associated with many adverse effects. Therefore, close monitoring of patients on DR-TB therapy is necessary to ensure that adverse effects of drugs are recognized early by healthcare personnel and treated accordingly. This will improve drug compliance and, hence, treatment goals. Here we report three cases of tuberculosis who had unusual adverse effects while receiving anti-tuberculous medication, prompting drug discontinuation.

Tuberculous meningitis (TBM) is a medical emergency. It is the most devastating manifestation of tuberculosis (TB). The outcome depends on early diagnosis and appropriate treatment. Empirical antituberculous therapy should be started if clinical suspicion is high. All patients should be tested for HIV. The choice of antituberculous drugs is extrapolated from pulmonary TB regimen, and many drugs have poor cerebrospinal fluid penetration. More evidence is required to guide on drug therapy in TBM. Steroids should be used as adjunctive therapy and response may be modulated by host genotype. Active monitoring should be done for complications such as hydrocephalus, hyponatremia, and stroke.

Worldwide, tuberculosis (TB) is still a serious and significant health concern, more so with the emergence of multidrug-resistant-TB. The inability of mankind to control this infection stems from the fact that the vaccines and drugs that were once effective against TB are no longer efficacious. This has led to a search for new antituberculous agents and adjuvant therapy. Vitamins are being revisited for their role in pathogenicity as well as for their antimycobacterial properties. Vitamins such as biotin and thiamin are essential for Mycobacterium tuberculosis and are required for establishment of infection. On the other hand, vitamins such as Vitamin C and Vitamin D have been shown to possess antimycobacterial properties. To combat M. tuberculosis, innovative strategies need to be devised, keeping in mind the efficacy of the agent to be used. Vitamins can prove to be useful agents capable of modifying the life cycle and biology of M. tuberculosis. We present here a brief overview of the available knowledge on thiamin, biotin, Vitamin C, and Vitamin D, keeping TB treatment and control in perspective.

Optic nerve tuberculomas are rarely reported and their natural history, prognosis, and duration of required treatment remain unclear. A 40-year-old immunocompetent male presented with complete loss of vision in his right eye, which had evolved over 6 weeks. He had optic atrophy on examination. Initial imaging showed right optic nerve swelling and thickening suggesting an infiltrative inflammatory optic neuropathy (infectious or noninfectious). Serial imaging revealed appearance of ring enhancement with a necrotic centre. Biopsy and culture of the coexistent parietal lobe lesion revealed Mycobacterium tuberculosis. Persistent optic nerve granuloma with evidence of radiological improvement was noted at 18 months follow-up with antituberculous therapy (ATT). Visual recovery could not be achieved. The salient features in this case include the clinical presentation initially mimicking an infiltrative or compressive optic neuropathy, rapid radiological evolution into a tuberculoma, subtle paradoxical radiological worsening after initiation of ATT and persistence of granuloma on follow up scan. The challenges involved in early diagnosis and during the treatment course will be discussed.

Tracheoesophageal fistula and bronchoesophageal fistula (BEF) usually result from malignancy. BEF caused due to benign conditions is rare. Here, we report a case of BEF due to tuberculosis. A 65-year-old lady presented with 15 days history of dysphagia, cough, and fever. Esophagoscopy revealed an ulcerated lesion at 22 cm. Further evaluation with contrast-enhanced computed tomography revealed mid-esophageal wall thickening, mediastinal and supraclavicular lymphadenopathy, along with BEF. Endoscopic tissue biopsy from ulcer revealed tuberculosis. The patient was put on antituberculous drugs and showed good response to therapy.