Hello,
I have gone through your query and understand your concern.
It seems that you are suffering from Subacute Nasal
Sinusitis.
It could not be due to Escitalopram.
All the symptoms are typically indicating the
sinus infection.
1. Headache
2. Dental pain
3. Pain around the eye.
There are many causes for sinusitis.
1. Nasal
mucous membrane swelling as from a common cold
2. Blockage of drainage ducts
3. Structural differences that narrow the drainage ducts
4. Nasal polyps
5. Conditions that result in an increased risk of infection such as immune deficiencies or taking medications that suppress the immune system.
6. allergies by environmental factors.
Following examination you need the following investigations to identify the cause and diagnose the nasal sinusitis
1. X-Ray and CT Para nasal sinuses
2. Allergic testing with patch test
3. Nasal endoscopy
4.
Complete blood count with Differential count to rule out any infection or
eosinophilia.
Usually we prescribe nasal decongestants initially and steam inhalation from a pan of boiling water.
Nasal saline sprays and antihistamines like cetrizine also helpful.
If we suspect infection, then we prescribe antibiotics or antifungals depends on the cause.
Hope this helps.
Please write back for further queries.
Wishing you good health.