Yes they can I have really bad sinus problems and I always get earaches and headaches
Yes.
No
Yes, a sinus infection can cause an ear ache. The fluids that drains off of your sinus can infect the ear, also cause you dizziness or the feeling of being off balance.
no, but it can give you an ear infection.
Yes, if the ear infection affects the semicircular canals in your ear that help you keep your balance.
Pressure in the ears and eyes is usually caused by a sinus infection. A sinus infection is an infection of the nasal cavities that causes headaches, pressure and cold like symptoms.
If you have chronic sinus for many months,your sinus infection spreads to eustachian tube.When you have the infection in eustachian tube,then obviously you will get ear pain.For chronic sinus,better you get surgery(Functional Endoscopic sinus surgey).
The ears may bleed because of an ear infection. A ruptured or perforated eardrum may also cause bleeding and drainage.
No blackish stool is a problem related to intestine I don't think they are related
you go to the doctor or get your ear wax out
Nasal packing could cause a lack of oxygen in those who have difficulty breathing through their mouths. Rarely, sinus infection or middle ear infection may occur.
no
If you have an infection you will need to see the doctor for antibiotics.
Sinus infection symptoms include headache and pressure. You may also have ear pain. Most sinus infections are caused by viruses and will go away in 10 days. Many sinus infections are actually migraines- not sinus infections at all!