Since you are already taking fexofenadine (Allegra), your inhaler, nasal spray, and Pulmoclear, let's focus on soothing your airways. Try elevating your head with extra pillows at night to reduce post-nasal drip. Running a cool-mist humidifier in your bedroom will keep the air moist, and sipping warm water with honey before bed can naturally coat and soothe your throat. If this persistent cough continues to disrupt your rest, please check in with your doctor to review your medications.

Since your blood and urine tests are clear, we can rule out many common internal causes. Sometimes, chronic itching without a rash can be triggered by deep skin dryness, nerve sensitivity, environmental factors, or even stress. Since oral antihistamines only offer temporary relief, gentle skin care routines and topical treatments like moisturizers containing pramoxine can help soothe the nerve endings in your skin. I highly recommend discussing these possibilities with a dermatologist to help find you lasting comfort.

Itching and rashes may be caused by allergy, infection, or skin irritation, and treatment depends on the cause. Avoid scratching the affected area and keep it clean and dry. Also, avoid using new soaps, creams, or products that may worsen the rash. Consult a doctor to identify the cause and recommend suitable treatment.

Itching in the hands, fingers, and ears may be caused by allergy, dry skin, fungal infection, or irritation from soaps or chemicals. Keep the skin clean, moisturized, and avoid known irritants or harsh products. If itching persists or worsens, consult a doctor for proper diagnosis and treatment.

I understand how frustrating chronic throat irritation and fatigue can be. Your elevated IgE level of 495 IU/mL strongly suggests an allergic response, and since your sinus imaging is clear, allergic rhinitis is a very likely cause. Fexofenadine (Allegra) is an excellent, non-drowsy antihistamine that is highly appropriate for these allergy-driven upper airway symptoms. While it will help, some patients also benefit from a nasal steroid spray for complete relief. Additionally, managing your allergies may help improve your sleep and ease your fatigue. I recommend discussing these results with an allergist to find the best combination for you.

Since it has been 10 days since your symptoms began and they are significantly improving, you can safely end your isolation, provided you have been fever-free for at least 24 hours without using fever-reducing medication. The fexofenadine (Allegra) you took helps with allergy-like symptoms but does not affect this timeline. You have done a great job protecting others by isolating. You can now safely return to your daily activities.