It's individual what treatment that helps, if any of the treatment helps at all.. None of the known treatments helps for me though..
The list of possible treatments:
-Topical steroid treatment that may include moisturizing creams to soothe the condition
-Systemic steroids, if necessary
-Propranolol medications
-Sodium bicarbonate baths
-Antihistamine therapy; it seems to be effective in some cases
-Ultraviolet light therapy (UVA with psoralen and UVB therapy)
-Immunosuppression therapy for severe symptoms: Use of immune modulators or medications that modulate immunity
-Patient education in understanding the condition is beneficial