Joint pain in my left index finger. Why?

Possible diagnoses. If the main problem is joint pain with activity and the joint is larger and feels bony, osteoarthritis is a possibility. If there is soft squishy joint swelling and morning stiffness, rheumatoid arthritis would be possible but in RA several joints are affected and usually both hands. Another possible diagnosis is simple tendinitis, usually from overuse. See your primary doc if it is not improving.
See below. Cannot really say without a physical examination. Can be arthritis, tendonitis, joint infection, gout (unusual spot), tendon injury. Physical exam should determine what it is and what should be done about it.

Related Questions

I've had an electrical shock sensation down my left arm and now have swelling in my left index finger and joint pain. It also twitches involuntarily.?

Nerve issue. Electrical shock sensations along an arm are always suspicious for nerve issues - especially now if you hare having finger changes. It's best to have an MD evaluate you to see if there are physical changes consistent with cervical nerve irritation. Nice article to review - http://www.necksolutions.com/cervical-radiculopathy.html. Read more...
Left arm parathesias. Do you do repetitive work like computer work?Consider thoracic outlet syndrome, cervical disc degeneration, possible carpal tunnel in your left wrist rarely MS. rest for 2-4 days from repetitive work. Try motrin 200 mg 2 tabs 2-3 x a day x 5 (if not allergic or ulcer) Consider cspine xray, EMG,physical exam,possible sonogram/CT/MRI F/U w/doc. Read more...

What will an ultra sound show around my index finger? I have joint pain there and it just hurts

See details. An ultrasound of a finger has limited usefulness. It may show inflammation or joint damage but is often no more helpful than an x ray for the finger issue. Read more...
Many things. Ultrasound is helpful to many things . It may show soft tissue swelling. Or other problems within the joint like narrowing or early erosion of bone. All without radiation exposure. In many ways it is more sensitive than standard x rays. Read more...

Joint pain in my fingers and my right index finger gets "stuck" either extended or bent. I have bi-lateral pain in several joints of my fingers. My right index gives me the most trouble. Many mornings when I wake, I can not bend the finger unless I use my

Trigger . Trigger finger or stenosing tenosynovits an inflammatory condition of the flexor tendons and their lining that has a mechanical component is the most common reason for a stuck or triggering digit. Other conditions can simulate this such as disorders of the extensor tendon mechanism where an imbalance of the tendon casues the finger to be held tightly in place and then the components of the tendon release suddenly as the joint flexes. However a "trigger finger" is a very common cause http://www.Assh.Org/public/handconditions/pages/triggerfinger.Aspx. Read more...
So . So called "trigger finger" is indeed the most likely cause. In most cases it "just happens" but occasionally there is some underlying condtion. The good news: it's readily treated so get into see someone and "get it fixed" if simple measures such as rest don't help, a properly administered cortisone shot has a high rate of success. Best of luck. Read more...

I have been experiencing extreme fatigue in the last few weeks. This has been coupled with joint pain in my left fingers/hand/wrist. Ideas?

Yes, inflammation! You are not describing injury or djd. Inflammation always causes fatigue! see your pcp, or a rheumatolist! Read more...
It could be a lot of. There's no single test to confirm a diagnosis of chronic fatigue syndrome. You may have to undergo a variety of medical tests to rule out other health problems that have similar symptoms. Treatment for chronic fatigue syndrome focuses on symptom relief.Good luck thanks. Read more...

When I sleep/lay down, my hands go numb. After waking my fingers dont open and close properly but eventually return to normal by mid day. (Although there is joint pain) Also, my feet go numb. I have pain in my left foot and ankle. I have the same sharp p

You need to see MD. The symptoms you describe are clearly not normal. The potential causes are numerous, and if not identified may result in significant medical problems ranging from loss of function and joint destruction to even cardiac issues. This can't be diagnosed via Internet. Make an appointment to see a doc ASAP. Read more...