Hello doctor, i have been experiences cough for about 2 months now. i have been to 3 or 4 doctors and nothing is helping. i have asthma and allergies. i have coughed up blood mucus twice in 2 months. i cough up small mucus balls every now and then. i have

Combination problem: I assume you have had a thorough history and physical with appropriate tests including lung function, chest xrays and CT of sinuses. Many people with chronic cough tend to have a combination of 1-asthma, 2-post nasal drip from allergies and/or sinusitis and 3-silent gastroesophageal reflux. All three must be managed. Don't brush aside #3 even if you don't feel heartburn.