Some people feel very uncomfortable when in close proximity to others, possibly due to sensory issues. Talk with the student about different places he could stand in different settings where he might be more comfortable. This strategy can help him think about ways to handle his discomfort by giving him some control over the situation.
One of my students has great difficulty sharing playground equipment with his classmates. He tends to push them away when they try to climb up beside him or yell at them if they’re ahead of him in line for the slide. He’s not making any friends this way. How can I help him share his space?