<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Im experiencing palpitations, problems with movement and a hip lump or mass. What could be the cause?  <response>: These symptoms may indicate normal pressure hydrocephalus. Its when excess cerebrospinal fluid builds up in the brains ventricles, leading to difficulty in movement, heart palpitations, and a lump or mass in the hip area. Well need to do some further tests to confirm the diagnosis. 