there is a strong possibility that this is gout. considering that it occurred relatively acute it is possible that it is gout. the diagnosis of gout is by crystal examination in joint fluid and on clinical examination of joints. of course osteoarthritis is one of the leading causes of arthritis after 40 and the big toe is a common joint. however since the treatment is very different for both it is worthwhile visiting a rheumatologist. x-rays can show that you have oa but then there may be concomitant gout as well. rheumatoid arthritis generally does not present like this. for further information consult a rheumatologist online --> <link>
can x-ray differentiate rheumatoid arthritis and osteoarthritis?