Thank you for clarifying,
The reason that you are not feeling better may be due to a few things.
First, the infection may be viral and therefore will not respond to any antibiotic at all. A large proportion of sinusitis cases are viral. If symptoms persist for 10 days or longer, then we consider antibiotics, especially if fever, thick nasal discharge and facial pain are present.
Second reason that you may not be feeling better is that you need a different antibiotic or a longer course of antibiotics. Often, high dose amoxicillin, Bactrim, or erythromycin are used first line for 10-14 days. That does not mean that the doxycyline was the wrong choice. But because you have persistent symptoms, you may now need a broader spectrum antibiotic such as Augmentin or levaquin.
Addition of a steroid nasal spray may also be of benefit at this point (this is prescription).
If you are not using a decongestant (sudafed
) I would add that in the morning.
Feel free to ask any follow up questions you may have and I will be happy to discuss further,
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