Hi, my husband was clearing out woods on our property and was pricked by a tree that had 1-2 thorns on it. The thorn went into his thumb about 1/4 , into the joint, and is now very swollen and red, and also very painful. He has limited range of motion, even if he ignores the pain and tries to bend it. Is there anything he can do to ease the pain or help bring the swelling down?