My mom is 58 years old, she has been coughing several times each day for the past 9 months, sometimes she spits clear mucous after coughing ano in the last two days she is following the mucous with a vomit (while she’s vomiting she feel like that there are spike or needles being injected in all of her chest) and when she coughs hard she kind of having a little bit of a pee. One doctor checked her nose and said that she has an allergy, he prescribed her a nasal spray (she used it, but it didn’t change anything).
She also has an a skin allergy that doctors don’t know what causes it (they made an allergy test at hospital and it showed that she has no skin allergy at all), a point to mention, she gets that allergy often by sudden and sometimes when she gets very nervous or scared or angry.
She says that the cough is exhausting her so much.
Sometimes her heart beats hard suddenly for a while
Now the question is: what is the reason of the cough and how could she cure

Note: when she was 28 she had an allergy from chokes she used to cough hard back then when she used the board chokes. She cured from it by the help of the doctor (she doesn’t remember how) (she is an a retired teacher since 2 years ago) ..

She takes both ramipril 5mg and amlodipine for high blood pressure
She takes Aerius for skin allregy (and it works)
She takes simvaxon 10mg for cholesterol