Thanks for writing here.
Yellow bumps can be due to gout
Skin manifestations can occur at a late stage in gout.Increased uric acid
can get deposited under skin producing yellow bumps.Get uric acid level checked.
Do not try to to poke with needle since it can lead to infection.
It will be better to start treatment under the guidance of a rheumatologist
Hope this will solve your query.Take care.