IVIG is the best available treatment for SCLS and is nowadays considered the gold standard of care. And that is so because it has been associated with a dramatic reduction in the occurrence of SCLS attacks in most patients, with no or minimal side effects.
In my case, I had 5 serious episodes of SCLS in the 9 months before being put on IVIG, and I have had zero episodes of SCLS in the 7 years since then.
On the other hand, steroids including a corticosteroid like Prednisone, while they can help to prevent or shorten episodes of SCLS, have well-known damaging side-effects.
These include fluid retention, weight gain, increased blood sugar (which can lead to diabetes), change in body shape (increase in fatty tissue on the trunk while the arms and legs get thinner), increased susceptibility to infections, acne, thinning of the skin, easy bruising, increase in blood pressure, unfavorable changes in cholesterol levels, irritation of the stomach and small intestine lining, ulcers, bleeding, early cataracts and glaucoma, thinning of the bones leading to osteoporosis, and etc.
One of the first SCLS patients I ever came to know had been treated with steroids for many years. She eventually died from steroid-related damage and complications -- and not from SCLS.
And yes, I've also known confirmed SCLS patients who thought that since they had not had any, or any serious, episodes of SCLS in a while, they should not subject themselves to an IVIG therapy. They too eventually died from major episodes of SCLS which seemingly came from nowhere.
Keep reading the information in this website and make your own informed choice. It's only your life that's at stake.