Question:
Aconite poisoning causes all of the following except:
Aconite poisoning causes all of the following except:
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Aconitine keeps sodium channels open, so the heart slows and pressure drops, not rises.
Updated On: Jun 24, 2026
- Hypersalivation
- Tingling and numbness
- Increased blood pressure
- Chest pain
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Aconite (from Aconitum napellus, also called monkshood or Indian aconite, vatsanabha) is one of the most lethal plant poisons. Its active alkaloid is aconitine.
Step 2: Aconitine acts on voltage-gated sodium channels and keeps them open, causing persistent depolarisation of nerve and cardiac muscle. This explains the classic features.
Step 3: Local and early effects include tingling, numbness and burning of the mouth, tongue and skin (paraesthesia), along with marked hypersalivation. So options A and B are real features.
Step 4: On the heart it causes bradycardia, falling blood pressure (hypotension), arrhythmias and chest pain. Blood pressure goes down, not up. So an increase in blood pressure is NOT a feature of aconite poisoning.
Step 5: Therefore the exception is increased BP. The answer is option C.
Step 2: Aconitine acts on voltage-gated sodium channels and keeps them open, causing persistent depolarisation of nerve and cardiac muscle. This explains the classic features.
Step 3: Local and early effects include tingling, numbness and burning of the mouth, tongue and skin (paraesthesia), along with marked hypersalivation. So options A and B are real features.
Step 4: On the heart it causes bradycardia, falling blood pressure (hypotension), arrhythmias and chest pain. Blood pressure goes down, not up. So an increase in blood pressure is NOT a feature of aconite poisoning.
Step 5: Therefore the exception is increased BP. The answer is option C.
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