My mom has lower backpain. she felt it after mopping. she alao has arthritis. she is worried about bladder infection. what should she do. she is 54 yo?

Back pain: This most likely represents muscular pain from the mopping activity. A bladder infection is more likely if she has pain with urination, urinary frequency, or blood in her urine. She should take pain relievers and apply heat.

See her doc: She should really see her doctor to try to sort this out. It is impossible to conclude what is bothering her without a good physical examination and if necessary some medical tests.