What Causes Greenish Gray Stool, Sinus And Chest Infection?

Posted on Sat, 4 Jul 2015

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sat, 4 Jul 2015 Answered on

Mon, 27 Jul 2015 Last reviewed on

Question : I have had greenish/ gray stools . I'm have sinus and chest infection and im I'm steriod nasal spray and loratadine antihistamines nd doxycycline antibiotics
Would this be contributing to my stools being this colour

Answered by Dr. Ram Choudhary (7 hours later)

Brief Answer:
different probabilities

Detailed Answer:
Hi
Welcome to healthcare magic.
Greyish stool is not related to the current drugs which you are taking. But doxycycline can cause pseudomembranous colitis which is associated with foul smell and profuse loose stools with pain abdomen.
If there are these symptoms then you should get stool sample tested for Clostridium difficile toxin.
If no such symptoms then the dark color may be due to blood in stool and a stool sample for blood in stool should be tested.
If that too not the case then dark stool indicates dehydrated state and take lots of household liquids and soups and fruits to help it out.
I hope the advise will be helpful for you.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar