What causes dull ache in lower back and nausea?
Patient: I experienced a dull ache in my lower back and couldn t get comfortable in any position. I also experienced nausea and threw up once, then had dry heaves a couple of times. The symptoms lasted about 2 hours. I feel somewhat better now. I m not sure what s wrong with me. Doctor: Hello.  Thanks for writing to us.  Can be due to muscle spasm related to bad posture or a poor back support by the mattress at night. Taking muscle relaxants will help. I hope this information has been both informative and helpful for you.  Regards, Dr. Praveen Tayal .  For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Praveen-Tayal drtayal72@gmail.com