Itching all over the body after heavy exercise with a very high IgE level is most likely due to an allergic tendency, such as exercise-induced urticaria (hives), which means your skin becomes sensitive and releases histamine during exertion; medicines like Elina 10 mg (an antihistamine) help control symptoms but do not cure the condition permanently. Many people manage it well by taking antihistamines regularly as advised, avoiding triggers like overheating, very hot showers, or exercising in extreme heat, and gradually building up exercise intensity rather than sudden heavy workouts. Keeping your skin cool, staying hydrated, and wearing loose clothing can also help. Since your IgE is quite high, it is advisable to consult an allergy specialist for proper evaluation and long-term management, and in some cases, dose adjustment or additional medicines may be needed. While a complete permanent cure is not always possible, symptoms can usually be well controlled so that you can continue normal activities, including physically demanding jobs, as long as the condition is stable and monitored.