This generally occurs when uric acid crystals get accumulated in the joints, and cause sudden and severe pain, swelling, and redness.

Uric acid crystals can also deposit in the heel, causing sharp, stabbing pain that might feel like plantar fasciitis but doesn’t improve with typical treatment.

Uric acid, a byproduct of purine breakdown, can accumulate due to poor elimination or overproduction, leading to hyperuricemia. This condition may cause painful gout, characterized by joint ...

What causes kidney stones? Kidney stones typically begin as small crystals that attach on the lining of the kidneys, where they can go unnoticed for months or even years.

Ketones Basic Science Ketones are products of body fat metabolism and are not normally found in urine. The three physiologic ketones are acetoacetic acid, acetone and β-hydroxy-butyric acid.