Eligibility Criteria:
Inclusion Criteria
Concurrent Medication:
Allowed:
* Pneumocystis prophylaxis.
* Antiretroviral therapy, or other experimental protocols.
* Antipyretics and analgesics as per the treating physician.
Exclusion Criteria
Co-existing Condition:
Patients with the following are excluded:
* Unexplained fever.
* Night sweats.
* Unexplained anemia with hemoglobin \< 10 g percent or hematocrit less than 30 percent.
* Hepatic transaminase elevations or total bilirubin values of \> 3 times normal.
* Long-term (over 2 weeks) treatment with any drug with known significant anti-Mycobacterium avium complex (MAC) activity including isoniazid, ethambutol, rifampin, raffia, PAS, PZA, amikacin, streptomycin, ethionamide, viomycin, cycloserine, capreomycin, ciprofloxacin, imipenem, rifapentine, gentamicin, or penicillin.
Patients with the following are excluded:
* Known hypersensitivity to clofazimine.
* Mycobacterium avium complex (MAC) infection diagnosis at any site (except isolation from stool in asymptomatic patient).
* Any of the following symptoms at the time of study entry:
* Unexplained fever.
* Night sweats.
* Unexplained anemia with hemoglobin \< 10 percent or hematocrit less than 30 percent.
* Hepatic transaminase elevations or total bilirubin values of \> 3 times normal.
* Long-term (over 2 weeks) treatment with any drug with known significant anti-MAC activity.
Prior Medication:
Excluded:
* Long-term (over 2 weeks) treatment with any drug with known significant anti-Mycobacterium avium complex (MAC) activity including isoniazid, ethambutol, rifampin, raffia, PAS, PZA, amikacin, streptomycin, ethionamide, viomycin, cycloserine, capreomycin, ciprofloxacin, imipenem, rifapentine, gentamicin, or penicillin.
Group 1:
* AIDS patients with a first episode of Pneumocystis carinii pneumonia (PCP) within 2 to 4 months prior to study entry.
* Group 2:
* Patients with T4 counts \< 100 cells/mm3, regardless of prior opportunistic infections or malignancies.
* Karnofsky = or \> 70.
* All patients must sign informed consent.