I highly recommend consulting a dermatologist or an allergist for your symptoms. Regarding Allegra (fexofenadine), 180 mg twice daily is a higher-than-standard dose. While hair loss is an extremely rare side effect of fexofenadine, the underlying chronic rash or bodily stress itself can trigger hair shedding. You can safely stop taking it, but stopping abruptly may cause your itchy rash to flare up. It is best to consult your doctor to safely adjust your dose and find the right relief.

Since the acute swelling has improved and you have no breathing difficulties, this is likely not an emergency. Your use of an antihistamine and a soothing lip balm is excellent for recovery. However, Soframycin (framycetin) is an antibiotic and might not be necessary for a standard allergic reaction unless there is an infection. I recommend pausing the antibiotic cream and having a doctor evaluate the dry rash. They can confirm if a mild topical steroid or a simple protective ointment would be safer and more effective for your healing.

Since it has only been three weeks, you can start using topical treatments like Mederma or silicone-based gels, provided all scabs have completely fallen off and the wounds are fully closed. Applying a broad-spectrum sunscreen daily is also essential to prevent the scars from darkening. For advanced clinical options like laser resurfacing or microneedling, it is best to wait at least six months to allow your skin to mature naturally. A dermatologist can help guide you when your skin is ready.

For your runny nose and watery eyes, antihistamines like Allegra (fexofenadine) or Zyrtec (cetirizine) can help, but they won't relieve general cold symptoms. Sinarest, which contains paracetamol, a decongestant, and an antihistamine, is often more effective for a multi-symptom cold, though it may make you drowsy. Please do not combine these medications, as they contain overlapping ingredients. Rest, drink plenty of fluids, and please see a doctor if your symptoms worsen.

It is very common for sinus symptoms to return after stopping fexofenadine (Allegra), as it manages symptoms rather than curing the underlying inflammation. Since you had nasal surgery ten years ago, structural changes or chronic allergies might be at play. For long-term relief, daily saline nasal rinses and generic corticosteroid nasal sprays (like fluticasone) are often highly effective and safe for ongoing use. I gently recommend consulting an ear, nose, and throat (ENT) specialist or an allergist.

It is generally safe to continue Allegra (fexofenadine) syrup if it was previously recommended for her, but please note it will not cure a new cough or ear pain. For her ear discomfort, child-appropriate doses of acetaminophen or ibuprofen can help relieve pain and ease her rest. Applying a warm, moist compress to her ear can also provide comfort. Because ear pain can sometimes signal an infection that requires specific treatment, I highly recommend having her evaluated by a pediatrician.