Pharmacology Crusted scabies is caused by sarcoptis scabei Ivermectin is used to treat it. It acts by following neurotransmitter – A Acetylcholine B Adrenaline C Noradrenaline D GABA 💡 Explanation Crusted scabies is caused by sarcoptis scabei Ivermectin is used to treat it. It acts by following neurotransmitter - ✓ Correct Answer: D. GABA