You may be retaining water if you eat too much sodium, take certain medications, or have a condition like kidney disease or cancer. Water retention (edema or fluid retention) occurs when fluid builds ...

Experts do not fully understand the exact cause of overactive bladder, but it may involve the involuntary contraction of the detrusor muscle, which controls bladder emptying. Risk factors for ...

Medically reviewed by Maria M. LoTempio, MD Key Takeaways Botox can cause temporary redness, swelling, tenderness, or bruising at the injection site.You may get flu-like symptoms like fever, body ...