Welcome in H.C.M.
I have gone through your query regarding chronic catarrh
in head and ear, tinnitus and pressure in ear along with abdominal discomfort.
Here your chronic cold is appears to be main disease and all others are as a complications of it. So I would like to tell you the common causes of chronic cold are-
1- Allergic rhinitis
2- Deviated nasal septum
3- Nasal polyps.
All above has got few symptoms are common and they may be differentiated by clinical examination and investigations. Final diagnosis is must before starting treatment as each above had got different treatment with variable prognosis.For this you have to consult ENT specialist
Your other symptoms as ear blockade, tinnitus, dizziness and pressure in ear are all because of catarrh.