Typical symptoms of a skin allergy often include redness, itching, swelling, and rash. The affected area may become dry, and flaky, or develop small blisters that can ooze or crust over. These symptoms can appear suddenly after exposure to an allergen such as certain plants, chemicals, metals like nickel, or skincare products. In some cases, hives, which are raised, with itchy welts, may develop rapidly and vary in size. The severity of symptoms can range from mild irritation to intense discomfort, and the reaction may be localized to one area or spread over larger skin regions depending on the allergen and exposure.

Other common signs include warmth or tenderness in the affected skin, burning sensations, and sometimes pain if the skin is broken or infected from scratching. Chronic skin allergies can lead to thickened or cracked skin due to repeated scratching and inflammation. It is important to note that symptoms can differ between individuals and may mimic other skin conditions, so professional evaluation is recommended if symptoms persist or worsen. Early identification and avoidance of the allergen often help reduce the severity and duration of the reaction.