### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My daughter is 23 and generally healthy.  This week she came to visit. It is a 6 hr. drive.  One day after arriving she had chest pain on the left side from shoulder to under her breast.   She went to the ER and had lots of tests, nothing wrong other than a bladder infection.  The next night the pain doubled in intensity, she said 10 on a scale of 1 to 10.  I took her back to the ER, and they again did blood work, X-ray and CAT scan.  All testing was normal, there was a left small pleural effusion.  The doctor said she couldnt find anything really wrong, suggested more testing with her PCP.  The pain was intense and a similar situation has happened before after traveling. She also gets migraines and is on LoEstrin birth control.  I am worried that there may be something serious wrong.  She has had pleurisy in the past as well.

### output:

Hello and thank you for asking in Chat Doctor. I can understand your concern. I will try to give you some other information. I all the inflammatory tests are negative we exclude the acute factors causing pleural liquid I mean the inflammatory process of the pleural space which is very painful. According to the history it would be better to test for autoimmune disorders and I would recommend as follows:Atalanta, cANCARheumatoid Factoring phospholipid anticorpsPPDI am sure her doctor knows well these tests and will advise her further.I are negative to the other cause to be excluded is Holstein she is using already. But for this better to consult with her gynecologist. I wish a good health for you and your daughter Chat Doctor. 