Hand, foot, and mouth disease typically resolves within 7 to 10 days, and the rash spreading can be a normal part of the process before it heals. While it is wonderful his fever has subsided, his continued vomiting is important to address. Because vomiting can lead to dehydration in a 17-month-old, please contact his pediatrician for a quick evaluation. In the meantime, continue the hydroxyzine (Atarax) and calamine to keep him comfortable, and offer small, frequent sips of fluid.

Since you have completed courses of antibiotics like Augmentin and Clavox (amoxicillin-clavulanate), and antihistamines like Allegra (fexofenadine) without relief, the cause might not be a simple bacterial infection. It could be due to persistent sinus congestion, tension, or even a rebound headache from using Xylomist (xylometazoline) nasal drops for more than a few days. I gently recommend consulting an ENT specialist.

It is very common to feel tired while your body fights an infection, and fatigue can also be a side effect of allergy medications like fexofenadine (Allegra 180) or levocetirizine (Levosiz). While fexofenadine is generally non-drowsy, individual responses vary. Please note that Allegra 180 is an adult dose and is not safe for a young child. I gently encourage you to consult your healthcare provider to discuss these symptoms, verify the correct dosages.

This is a common occurrence. Rashes can reappear if the underlying fungal infection or allergy wasn't completely cleared, or if you were re-exposed to the original trigger after stopping your Itraconazole and Allegra. I highly recommend contacting your prescribing doctor for a follow-up. They can safely evaluate whether you need a longer course of treatment or a different approach. For now, try to keep your skin clean, dry, and avoid scratching the affected areas.

I understand how frustrating and uncomfortable a persistent itchy rash can be, especially when antihistamines like cetirizine and Allegra aren't providing relief. Since you don't have a fever or weakness, classic dengue is less likely, though mild viral rashes can sometimes present this way. This could be a form of hives (urticaria) triggered by an allergen, stress, or even physical factors. Sometimes, stubborn rashes require a different class of medication or a short prescription treatment to fully calm the immune response. Please don't worry, but do consult your doctor or a dermatologist.

Since fexofenadine (Allegra) and cetirizine hydrochloride only temporarily managed your symptoms, the underlying cause needs a closer look. Recurrent skin patches can sometimes require a longer course of antihistamines, a combination of different medications, or a search for specific triggers like stress, foods, or environmental factors. Please don't worry, as this is very common and highly manageable. I recommend consulting a dermatologist or your primary doctor to identify the exact cause and tailor a safe, long-term treatment plan for you.