Mumbai, April 19 -- The Indian rupee is likely to come under severe pressure in opening trades on Friday amid waning risk appetite that is dragging equities sharply lower. Besides, dollar index futures hovering around 106 mark and elevated crude oil prices are also expected to dampen sentiment for the local unit. Yesterday, rupee recovered against the dollar as the American currency and international crude oil prices retreated from their elevated levels. Rupee rebounded from its all-time low levels and appreciated 6 paise to close at 83.55 (provisional) against the US dollar on Thursday. Meanwhile, Indian shares extended losses for a fourth day running on Thursday due to heightened tensions in the Middle East and concerns about the outlook ...