How long does it take to treat a nontuberculous mycobacteria (NTM) infection?

There is no fixed, standardized timeline for treating nontuberculous mycobacteria (NTM) infections, as the duration varies based on the type of bacteria causing the infection, the severity of the case, and the body's response to treatment [5]. In general, these infections require long-term treatment protocols that include the use of three or more antibiotics, and treatment typically lasts between 12 to 24 months, sometimes extending for several years in certain cases [5]. These long periods are necessary because NTM bacteria are characterized by their high resistance to antibiotics compared to traditional chest bacterial infections [4].

Why does treatment take a long time?

The challenges in treating NTM lie in the nature of these bacteria, which occur naturally in the environment and differ in their behavior from tuberculosis bacteria. Given that these microorganisms are capable of developing drug resistance, physicians rely on intensive drug regimens aimed at attacking them through multiple pathways [5]. Failure to adhere to the specified schedule or stopping medication upon feeling slight improvement may lead to the return of the infection in a more aggressive and resistant form, making subsequent treatment more difficult and complex [4].

Factors influencing the treatment plan

The duration is subject to periodic assessment by the specialized medical team, as several factors are taken into account to determine the success of the treatment course:

• Type of strain: There are more than 160 species of NTM, and the sensitivity of each type to medication varies, which necessitates adjustments to the type and duration of antibiotics [5].
• Laboratory monitoring: Treatment efficacy is monitored by requesting repeated sputum samples to ensure a reduction in bacterial count, which is a critical indicator in determining the continuation of treatment [5].
• General health status: Individuals with underlying medical conditions such as bronchiectasis, chronic obstructive pulmonary disease (COPD), or a weakened immune system may require longer monitoring due to the body's reduced ability to fight the infection on its own [4].

Medical monitoring during treatment

During this extended period, physicians regularly monitor liver function, kidney function, and blood tests to ensure that side effects from the potent medications used do not occur [5]. If you are undergoing treatment, it is very important to strictly follow the doctor's instructions and establish a daily routine for taking medication, as this helps avoid missing doses. Additional information on how to manage these challenges can be found in our article on Nontuberculous Mycobacteria (NTM) Infection: Diagnosis and Treatment Challenges (Arabic).

When should you seek immediate medical care?

If you notice the onset of concerning symptoms during the treatment period, such as jaundice (yellowing of the skin or eyes), severe hearing impairment, or severe visual disturbances, you must contact your medical team immediately [5]. Additionally, a sudden deterioration in breathing or severe coughing accompanied by blood requires urgent medical evaluation to rule out complications or the need to adjust the medication plan [4].

Medical references

• Non-Tuberculosis Mycobacteria (NTM) lung infections - University Hospitals Sussex NHS Foundation Trust
• For patients with Non-Tuberculous Mycobacterium Infections (NTM) - Worcestershire Acute Hospitals NHS Trust