<s>[INST] My mom has been sick since sat with a cold and sinus pressure and cough. Today she woke up and is having a hard time with blurred vision. She says it feels like she s going partially blind. Is this something dehydration would cause it is there a virus going around with these symptoms [/INST] Hello! Thanks for using Chat Doctor.come read carefully your question and understand your concern. I think you mom have sinusitis. Sinusitis is a common condition in which the lining of the paranasal sinuses becomes inflamed. It is usually caused by a viral infection and usually gets better in two to three weeks. As you have pointed out blurred vision cough and cold are among the common symptom. Blurred vision is caused due pressure around the eyes, cheeks, nose, or forehead that gets worse by stoopingMost sinusitis are caused by a virus. Very are rarely they caused by bacteria. Even if the symptoms appear to be localized in the breasts, they are not always infected. To make a correct diagnosis, the doctor gathers detailed records and performs a physical examination. The doctor may also order more tests, if applicable. These tests may include allergy tests, chest x-rays, computerized axial tomography (with accurate images of sinus cavities), or a sample of nasal secretions or nasal lining. The doctor may also perform an endoscopic examination. In this case a narrow, flexible fiber-optic endoscope is inserted into the nasal cavity through the nostrils, which allows the doctor to see the area where the sinuses and the middle ear Chat Doctor. Since most cases of sinusitis are caused by a virus, the treatment is aimed at relieving symptoms. Medications include:Oral decongestants (phenylephrine, pseudocode </s>