Ivermectin is indicated in Rx of:
**Core Concept**
Ivermectin is a broad-spectrum antiparasitic medication that targets various parasites, including ectoparasites, endoparasites, and filarial parasites. It works by inhibiting the glutamate-gated chloride channels in the parasite's nervous system, leading to paralysis and death.
**Why the Correct Answer is Right**
Ivermectin is primarily indicated for the treatment of onchocerciasis (river blindness), strongyloidiasis, and lymphatic filariasis. It is also used for the treatment of scabies, pediculosis, and other ectoparasitic infestations. Ivermectin's mechanism of action involves the inhibition of the gamma-aminobutyric acid (GABA) receptor and glutamate-gated chloride channels, which ultimately leads to the death of the parasite.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because ivermectin is not primarily indicated for the treatment of malaria. While ivermectin has shown some promise in treating certain types of malaria, it is not a first-line treatment for this condition.
* **Option B:** This option is incorrect because ivermectin is not typically used for the treatment of tuberculosis. Ivermectin has been studied as a potential adjunctive therapy for tuberculosis, but it is not a standard treatment for this condition.
* **Option C:** This option is incorrect because ivermectin is not primarily indicated for the treatment of HIV/AIDS. While ivermectin has been studied as a potential adjunctive therapy for HIV, it is not a standard treatment for this condition.
**Clinical Pearl / High-Yield Fact**
Ivermectin is often used in mass drug administration programs to control and eliminate filarial diseases. It is also used as a treatment for scabies and pediculosis in patients who have failed other treatments.
**Correct Answer: C. Lymphatic filariasis.**