Recent study in the Journal of the American Medical Association (JAMA) recommends at least 3 years allergy immunotherapy

Allergy Drops-safe and effective

A February, 2017 allergy immunotherapy research study published in JAMA recommends that patients continue their subcutaneous (allergy shots) or sublingual (allergy drops) allergy treatment for at least 3 years for long term effectiveness.

Sources: Shortened dose of immunotherapy ineffective in allergic rhinitis,  All-American Allergy Alternatives, LLC

What is Sinusitis?

Sinus infections often follow a cold and cause pain and pressure in your head and face. Sinusitis can be either acute (sudden) or chronic (long-term). With chronic sinusitis, the infection or inflammation does not completely go away for 12 weeks or more.

Source: Sinusitis-Topic Overview