Loughman received his first senior international call-up when he was brought into the
Ireland squad by head coach
Andy Farrell ahead of their
Six Nations round 4 fixture against
England in March 2022, and was also selected in the squad for the
2022 Ireland rugby union tour of New Zealand. Loughman made his first appearance for Ireland when he started in their uncapped match against the
Māori All Blacks on 29 June, however, he was removed from the field in the first minute for a head injury assessment. Loughman appeared to display symptoms of concussion, but passed the assessment by an independent doctor and returned to the field, only to be removed permanently at half-time as a precaution. Progressive Rugby, who advocate for greater welfare in rugby, criticised the decision to allow Loughman to return to the field, though Ireland head coach
Andy Farrell defended the decision, insisting that Loughman passed the necessary tests but was removed at half-time in the best interests of Loughman himself.
New Zealand Rugby later admitted that a "communications gap" was responsible for allowing Loughman to return to the field and that, as Loughman was displaying symptoms of concussion, the head injury assessment was not necessary, as
World Rugby guidelines stipulate that a player displaying such symptoms be immediately removed from play. Loughman was then ruled out of Ireland's first test against
New Zealand on 2 July, Loughman started for
Ireland A in their 47–19 defeat against an
All Blacks XV on 4 November 2022, and made his senior international debut for Ireland eight days later when he started in their 35–17 win against
Fiji during the
2022 Autumn Nations Series. Despite initially missing out on selection, Loughman was called-up to Ireland's training squad for the
2023 Rugby World Cup warm-up matches after provincial teammate
Dave Kilcoyne sustained an injury, and featured as a replacement in the 29–10 win against
England on 19 August and the 17–13 win against
Samoa on 26 August before being selected in Ireland's 33-man squad for the
2023 Rugby World Cup. He featured as a replacement in Ireland's opening 82–8 win against
Romania on 9 September. ==Statistics==