Allergic reaction manifest outside as raches itching and various other forms. Substance which are foreign to body will be expelled out by body in the form of allergic reaction...Things which are outside the body causing such reaction are called external allergens Eg: talcum powder,few plants,sea foods whereas few which our bodys own autoimmune mechanism eg: IgE mediated
Next Steps
sort out the occasion and things which causes u the condition..and try avoiding it as much as possible
Health Tips
allergen patch test... consult