my son body alergy since yesterday

A. If your son has developed a body allergy since yesterday, it could be due to food, insect bites, new soap/detergent, dust, or weather changes. Here’s what you can do: 1. Immediate Home Remedies: ✔ Cold Compress – Apply an ice pack or cold cloth to the affected area to reduce itching and swelling. ✔ Aloe Vera Gel – Helps soothe irritated skin. ✔ Coconut Oil or Moisturizer – Keeps the skin hydrated and reduces dryness. ✔ Loose Cotton Clothes – Avoid synthetic fabrics that can worsen irritation. 2. Over-the-Counter Medicines (if needed): ✔ Antihistamine Syrup (For Itching & Redness): Cetirizine (Zyrtec, Alerid) or Loratadine – Helps control allergy. Dosage depends on age and weight (Check with a pediatrician). ✔ Calamine Lotion (For Soothing Skin): Apply a thin layer to reduce irritation and redness. 3. Identify Possible Causes: ❌ New foods? (Eggs, nuts, dairy, seafood, processed snacks) ❌ New soap, detergent, or lotion? (Can cause skin reactions) ❌ Insect bites or dust exposure? ❌ Extreme weather changes? (Dry skin can trigger allergies) 4. When to See a Doctor? ⚠ If allergy spreads rapidly or worsens. ⚠ If your child has swelling on the face, lips, or breathing difficulty (Emergency!). ⚠ If rashes are painful, pus-filled, or lasting more than 2-3 days. Would you like me to suggest a mild allergy syrup based on your child’s age?