<s>[INST] Hello doctor, I have had post nasal drip since last three months. It causes me to cough up mucus from my throat. It is very thick - sometimes bloody or sometimes cloudy. I am also having bloody, crusty issues in my nose with sneezing. I am not sick - no fever, no aches, do not feel bad. I just want to stop the mucus (it sometimes chokes me) and want to stop the bloody, crusty nose with sneezing. I tried Zyrtec. That did not help. I also tried Flonase - no help. I am afraid to take Benadryl because of other medicines I take for sleep and anxiety. What other suggestions do you have? [/INST] Hello.  Are the pictures you shared nasal snort or phlegm from throat (attachment remoed to protect patient identity)? Do you have any difficulty in swallowing or breathing? Is there any cough? Any chest pain? Do you have wheezing? Is there any recurrent bleeding in your nasal cavities? Do you smoke or drink? Our approach would differ if the bleeding is from upper airways and if it is from the lower. In the first scenario, we shall give you some nasal lubricant creams with the sprays and see if the bleeding stops. In the second we will have to rule out cough and chest problems. In either case a nasal endoscopy with a laryngoscopy is essential. Do you have such blood stained mucus from nose/throat every single day? Do revert back to us with all details so that we can help you. </s>