Based on your symptoms, this sounds like a form of hand eczema, such as dyshidrotic eczema or sweat-induced dermatitis. Hot, humid weather can trigger excess sweating, which irritates the skin and causes it to thicken and harden over time. Since antihistamines and antibiotics haven't helped, treatment usually focuses on keeping the skin barrier hydrated with generic emollients and managing inflammation with prescription topical corticosteroids. I highly recommend consulting a dermatologist for a proper diagnosis and a personalized care plan to keep your hands comfortable this summer.

Since your allergy has persisted despite taking various antihistamines (Teczine 10, cetirizine, and an Avil IV injection), please consult a dermatologist. Your body may need a different therapeutic approach. Alternative options to discuss with your doctor include: Combination therapy: Adding an H2-blocker (like famotidine) or a leukotriene antagonist (like montelukast). Corticosteroids: A short, supervised course of oral prednisolone to rapidly calm severe inflammation, or topical steroid creams (like mometasone) for local itching. Trigger identification: Allergy testing to find the root cause. Do not worry; persistent rashes are very common and highly manageable with the right specialist-guided treatment plan.

Taking Teczine Tablet (Levocetirizine) and Ketasma Tablet (Ketotifen) frequently is generally considered safe under medical supervision, but needing them every two days suggests that your allergy triggers are not well controlled. You should consult your doctor or an allergist to identify the underlying cause and to ensure that these antihistamine medications are the most appropriate long-term treatment for you.

Since standard antihistamines and nasal sprays haven't brought relief, you are an excellent candidate for allergen immunotherapy (allergy shots or sublingual drops), which helps desensitize your immune system to dust. First, I recommend consulting an allergist for diagnostic testing, such as a skin prick test or specific IgE blood test, to confirm your triggers. We can also evaluate you for nasal anatomical issues.

Leon 500 contains the antibiotic levofloxacin, and Teczine contains the antihistamine levocetirizine. Levocetirizine commonly causes drowsiness or mild dizziness, while levofloxacin can occasionally cause dizziness as well. Taking them together can indeed sometimes temporarily worsen your vertigo symptoms or increase dizziness. Please be reassured that this is a known, manageable effect. To stay safe, I recommend rising slowly from sitting or lying down, staying hydrated, and consult your doctor.

Since daily antihistamines have not helped after several months, the cause may not be allergic. It is very important for them to consult a healthcare provider or dermatologist. Persistent lower body itching can stem from non-allergic issues like dry skin, circulation changes, nerve irritation, or localized skin conditions that require targeted prescription treatments rather than allergy pills. In the meantime, they can find some relief by applying a gentle, fragrance-free moisturizer and wearing loose, breathable clothing. Please reassure them that a doctor can help find the right solution.