Attached, is a Segulah from Harav Elyashiv Shlita. The Segulah, which was said over from Harav Yitzchok Silberstien Shlita, Son-in-law of Harav Elyashiv Shlita, states, that Reb Elyashiv went to visit an ill person on Erev Shavuos and during the conversation, he repeated to him the Chazal which says, that at the time the Torah was given, all were healed from their sicknesses.
R’ Elyashiv Shlita then went on to say, that each year on Shavuos, that special Bracha returns.
When the person asked R’ Elyashiv Shlita when during the Yom Tov does this Bracha occur, R’ Elyashiv responded, “During K’rias Ha’torah, when the Ba’al Korah says the Aseres Ha’dibros”. TLS.