A homeless client presented at a street clinic with reports of hemoptysis and subsequently tested positive for TB. Which characteristics of the client's present circumstances would preclude treatment with INH?

A homeless client is an alcoholic and is presented with Hepatitis C, or HCV).

Explanation:

Hepatitis is a condition in which lungs are inflamed due to some bacterial infection. A homeless client whose reports shows hemoptysis, which is coughing with blood or bleeding airways, and Tuberculosis, is diagnosed with Hepatitis C.

Now Isoniazids are antibiotics which are used to treat TB infections but their major side effect is that they cause hepatotoxicity. The patient is already suffering from HCV and under such circumstances, treatment with INH will be prevented.