hi welcome to HCM
i had gone through your query and understand your concerns.
-if you take homeopathic
constitutional similmum to treat the allergy
,the problem cant be rec cured again,but if you take homeopathic medicines on acute symptomatic base the problem recur again.
-there is a miasmtic block in your body which prevents the cure.so you need both constitutional and miasmatic treatment for complete cure.
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you