Thanks for answering those questions. The symptoms that you are describing aren't noticed in patients that are taking Zyrtec or Singulair. I believe that you should see your phsician about these symptoms though. Based on the information that you have provided it sounds as though you may be experiencing the onset of Bell's Palsy.

When active, Bell's Palsey symptoms can range from mild to severe. A few of the symptoms of Bells Palsey are eye twitching and drooping of the corner of the mouth (you have a dimple), and numbness (novacaine feeling). These symptoms usually occur on the same side of the face as you have indicated.

Medical scientists believe that this is caused from Herpes Simplex (common cold sore). They believe that the virus has been dormant on the facial nerves and when activated causes symptoms.

Bell's Palsey usually (in mild cases) clears itself up in two to three weeks. Because the risk of more severe symptoms is possible it is best to have this diagnosed and monitored by a physician. It is treated with Acyclovir, a viral inhibitor and prednisone which is an steroid free anti-inflammatory medication.

If this information has been helpful to you then please do accept. Positive feedback is also appreciated. Let me know if I can help you further.

Thank You and Best Wishes for a Speedy Recovery