Allodynia (The limb is overly sensitive to light touch and/or temperature sensation and/or deep somatic pressure and/or joint movement) and/or hyperalgesia (to pinprick) compared to the other side.
You detect a problem
Patient reports a problem
Temperature asymmetry (more than 1 deg.) and/or skin colour changes and/or asymmetry. Assessment by feel is adequate.
Oedema and/or sweating changes and/or sweating asymmetry.
Decreased range of motion and/or motor dysfunction (weakness, tremor, dystonia) and/or tropic changes (hair/nail/skin)