Whether skin allergies will heal on their own depends on the severity of the condition. Mild cases may heal on their own, but may recur the next time they are exposed to the allergen; severe cases require prompt treatment and generally do not heal on their own. Generally speaking, mild allergy symptoms such as limited rash, mild itching, tingling, redness and swelling will be relieved to a certain extent after timely removal from the allergen, and patients may not need medication. However, if the allergy symptoms are more serious, such as nausea, vomiting, abdominal pain, diarrhea, difficulty in breathing, loss of consciousness or even anaphylactic shock, the patient should immediately use hormonal drugs or go to the hospital for treatment, which will not be relieved by itself. Patients with skin allergies should go to a regular hospital for allergen testing and diagnosis after relieving their allergic symptoms, and after clarifying the allergen, they can undergo desensitization treatment to reduce the chance of allergic reactions in the future; and for patients whose allergens cannot be measured, they can always have anti-allergy medicine to deal with unexpected situations.