Riddle

I am something many people don't enjoy having as a friend, including you. But I am called upon anything someone is injured.

Choose an answer

A.A doctor
B.Fear
C.Medicine
D.Pain
Hint: It's a word with 4 letters, starting with "P".

Answer

Pain

Why this is the answer

No one wants pain as a companion, yet it's exactly what shows up the instant someone gets hurt.

This riddle is filed under Hard/Difficult Riddles and rated Medium.