The lower back pain (LBP) is referring to the pain in the area between the rib cage and posterior which can also reach to the legs. LPB can appear in both genders and it is divided into three categories: acute LBP (lasting less, then 6 weeks), subacute LBP (lasting 6-12 weeks) and chronic LBP (lasting more, then 12 weeks). The origin of this symptom can have many explanation ranging from physical causes through psychic disorders to biochemical malfunctions of the body. In the situation when the LBP cannot be connected to known pathological condition it is called as nonspecific LBP. Although it is mostly being connected with low physical condition, it can also be a result of some reproduction system related diseases. Since LBP is the most common health condition seen by medical practitioners, based upon this condition there has been developed a system of signs and symptoms called as red flags (Pic. 1) that helps doctors to distinguish the presence of some related serious health conditions. 

Endometriosis

The growth of endometrial tissue outside the uterus is called endometriosis and it is connected with inflammatory reaction of the body. Inflammatory diseases are connected with development of pain in afflicted area. Endometriosis is quiet often connected with back (or/and leg) pain and it is causing hormonal imbalance which can lead to development of intensive co called incapacitating pain, which is highly predictive symptom of this disorder. 

Prostatitis

Another inflammatory disease caused by bacterial infection of prostate that is also often connected with lower back pain is called prostatitis. The inflammation is consequential to the reaction of the body to an infection and it can lead to development of pain sensation in whole body.

Ovarian, Testicular and Prostate cancer

Although such serious diseases are rarely the cause of lower back pain, it should not be taken lightly especially in patients with cancer history, since the spine is one of the most common sites of metastasis. Metastases may present as mechanical pain, radicular pain or weakness, or with myelopathy (neurological defection related to spinal cord). Pain is usually unremitting and progressive.

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Sources

Low back pain ―sourced from Wikipedia licensed under CC BY-SA 3.0
Lower back pain ―by Castillo and Lieberman licensed under CC BY 4.0
Approach to lower back pain ―by Moosajee and Kalla licensed under CC BY-NC 3.0
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