Question

Assertion (A): Diabetic ulcer is a trophic ulcer.

Reason (R): It is caused by ischaemia and anaesthesia.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is NOT the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Hint:

Think about what causes numbness and poor healing in a diabetic foot.

Answer 1

The Correct Option is A

Step 1: Check the Assertion.
A trophic ulcer forms over a pressure point once the skin loses protective feeling and its blood supply drops. A diabetic foot ulcer matches this picture closely, since long standing diabetes damages both the small nerves and the small vessels of the foot. So the claim that a diabetic ulcer is a trophic ulcer holds true.

Step 2: Check the Reason.
The Reason says the ulcer is caused by ischaemia and anaesthesia. Diabetic neuropathy takes away pain sensation from the foot, so small cuts and pressure sores go unnoticed and keep getting reinjured, and that is the anaesthesia part. At the same time, diabetic vascular disease narrows the small vessels, so the tissue cannot repair itself, and that is the ischaemia part. Both facts are medically correct, so the Reason is also true.

Step 3: See if the Reason explains the Assertion.
The two mechanisms named in the Reason, loss of sensation and poor blood supply, are exactly why a diabetic ulcer behaves like a trophic ulcer rather than a simple wound. So the Reason gives the correct explanation for the Assertion.

Step 4: Rule out the other codes.
The option that both are true but R does not explain A does not fit, since R directly gives the reason for A. The option that A is true and R is false does not fit, since R is also correct. The option that A is false and R is true does not fit, since A itself is correct.

Final Answer:
Both statements are true, and the Reason correctly explains the Assertion.