Back pain can be caused by various factors, including poor posture, muscle strain, disc injuries, arthritis, or underlying medical conditions like osteoporosis.
Neck pain often results from strain due to poor posture, especially when using computers or mobile devices, as well as from whiplash, arthritis, or nerve compression.
Shoulder pain can be due to overuse, injuries such as rotator cuff tears, bursitis, or tendonitis, and conditions like frozen shoulder or arthritis.