Dysuria, enuresis, diarrhea, constipation, and severe lumbosacral pain.

On the sacral region, 1.5 cun lateral to the median sacral crest, level with the second posterior sacral foramen. (This acupoint is bilateral, one on each side.)

Sure, I will translate the provided instructions into English.

Step 1: Lie prone;
Step 2: At the back of the pelvis, palpate inward and downward from the highest point of the iliac crest towards the sacral horns on both sides to find a prominent valley-like protrusion, which is the posterior superior iliac spine;
Step 3: The inner edge below the posterior superior iliac spine and the median line of the back is the second posterior sacral foramen;
Step 4: Draw a horizontal line from the second posterior sacral foramen that intersects with the median line of the sacral region;
Step 5: From this intersection, move 2 horizontal fingers lateral (place the index and middle fingers side by side, using the width of the middle finger's proximal interphalangeal joint as the standard for 1.5 cun), and this is the location of this acupoint.