Apart from skin tags being hereditary, they can often be cause of an underlying condition. In a lot of the cases, skin tags are very common in people that suffer from obesity and diabetes. Hormonal changes and weight gain during pregnancy can also result into skin tags.
If you suffer from obesity, one way to prevent skin tags on neck can be weight loss. Because the more fat and skin folds that are there on the neck, it causes more friction that results into formation of more skin tags. Since diabetes is a chronic disease, it is best to take advice from your doctor regarding the skin tag removal options that are best for you.
In case of pregnancy, the skin tags end up falling off on their own once the baby is born. You may need to give it some extra time. The baby is going to keep you busy anyways, that you'll hardly have time to think about skin tags actually.
While skin tag prevention may not be possible in every case, you can always seek for removal options. First step should be consulting your doctor to make sure that your skin tag is actually a skin tag and not some other type of skin growth. Once you're sure about that, there's countless removal options that exist. You can also remove skin tags at home using Aven Buzz Skin Tag Remover Pen.