Typically it is a straightforward diagnosis due to its distinct visual characteristics of hyperextension of the proximal interphalangeal (PIP) joint and flexion of the distal interphalangeal (DIP), along with a contorted finger shape resembling that of a swan neck. And more often than not your patient has Rheumatoid Arthritis (RA).

Trigger thumb is a common condition marked by pain and limited mobility in the affected thumb. Symptoms often include an audible 'catching' or locking of the joint during movement, as if pressing on a trigger. While potential causes like rheumatoid arthritis, gout, diabetes and trauma may increase risk factors - the true cause remains unknown.

A Mallet Finger, sometimes called a baseball finger, is a condition in which the end joint of a finger bends but will not straighten. The finger can be pushed straight but will not stay straight without support.