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

### input:
Hello I have a mild cough only when im seating foe maybe more than 1/2 hour or when I,m in bed and lay on my back with a pillow...this is happening to me for 6 month already, at the beginning my cough was more pronounced but now is mild and sometimes is only the sensation to coughing. Also some sneezing in the morning or during the day, some time I felt like asthma symptoms with a little short of bread but maybe three or four time during the last six month. Not  smoking for the last 20 years, semi retire, 63 years old, walking four times a week, other ways healthy.

### output:

Hello, The symptoms described by you are typical of a condition called "post nasal Chat Doctor.  As the name suggests that there are certain secretions from the back of your nose that are trickling down into your throat provoking cough especially when you lie down or sit for long time. This is seen commonly individuals with nasal and respiratory allergies like you have described (sneezing and asthma like symptoms). Since the root cause of your cough is nasal secretion that should be the target of treatment. You could try the following:1) Plain steam inhalation twice a day especially after you come back home from outside and also before going to bed. After taking steam for 10-15 mins clear your nose and hawk and cough out the phlegm in your throat. This will help to prevent nasal allergies as well as night cough. Steaming can be continued indefinitely as it is a natural remedy.2) Anti histamines like cetirizine before bedtime will prevent nasal secretions and prevent sleep disturbances.3) you could also try out steroid based nasal sprays containing fluticasone or mometasone. These are very effective in reducing nasal hypersensitivity to whatever induces you allergies, thus reducing sneezing, postnasal 