How to Control Black Spot Fungus Disease on Roses. The signs of black spot fungus on roses are hard to miss. Black spot (blackspot) is one of the most common diseases of rose bushes; and, if left unchecked, it can cause quite a bit of damage to your rose garden. Caused by the fungus Diplocarpon rosae, black spot begins just as its name suggests, with black spots showing up on the surface of the leaves.
1 Swallowing disorders (may result in actual post-nasal drip or just cause the sensation of having it) 2  Strep throat (post-nasal drip is an uncommon strep throat symptom, but it can occur)  Pregnancy and other conditions that cause fluctuation of hormone levels.
(Mucus can also form in the lungs, which is the case in patients with asthma and chronic bronchitis. When that happens nerves in the bronchi are stimulated, resulting in cough.). Mucus dripping from the nose or sinuses is called post nasal drip (PND). PND is the most common cause of chronic cough. If mucus stayed in the nasal passages and sinuses -- if it did not drip into the back of the throat and down toward the lungs -- then rhinitis and sinusitis would be an uncommon cause of cough.