In which areas does pain typically occur? (e.g., perineum, lower abdomen, lower back, testicles, penis)

Bro, this is a very common question, and many friends dealing with prostatitis report similar sensations. The areas you listed (perineum, lower abdomen, lower back, testicles, penis) are indeed the spots most frequently "visited" by pain.

Let me break it down for you in detail, like a "pain map" you can compare against:

Core Regions: The Prostate's "Neighbors"

This zone experiences the most direct and common pain.

Perineum: This is the classic location. Specifically, it's the area between your scrotum and anus. The sensation might be a dull ache, a sense of heaviness, or the feeling of sitting on a golf ball, which is very uncomfortable. It often worsens with prolonged sitting.
Lower Abdomen: Mainly the area below the navel where the bladder sits. The feeling is often soreness or a dull ache, sometimes accompanied by frequent urination or urgency.
Pubis Area: This refers to the hard bony area at the very bottom of the abdomen, just above the base of the penis, which can also experience pain.

Referred Pain Regions: Pain from "Errant Signals"

The nerves surrounding the prostate are numerous. When it's inflamed or experiencing issues, pain signals can "radiate," making it feel like other areas hurt, though the root cause remains the prostate.

Lumbosacral Region (Lower Back): Many people feel soreness in their lower back or the bone above the buttocks (sacrum), which can easily be mistaken for a strained back muscle or poor posture. This pain is often chronic, not pinpointable, but rather a general discomfort over an area.
Testicles and Epididymis: There might be a sense of heaviness or a pulling pain, on one or both sides. This discomfort can sometimes extend into the inner thigh/groin.
Penis: Pain can occur at the base of the penis or the head (urethral opening), often manifesting as a burning sensation or discomfort, particularly after urination or ejaculation.
Groin (Inner Thigh): The area where the thigh meets the abdomen can also experience pulling pain or soreness.
Anus and Rectum: Sensations include anal heaviness or fullness, a frequent urge to have a bowel movement with no results, or a feeling of something in the rectum.

To Summarize

Think of the prostate as a transportation hub. When it gets "congested" (inflamed), the surrounding "roads" (nerves) are affected, sending out incorrect pain signals.

The most crucial points are:

Everyone's experience is different. Some may only have pain in one spot, while others may experience it in several areas simultaneously or alternately.
The nature of the pain varies. It might be soreness, a sense of fullness, a dull ache, a sharp pain, a burning sensation, etc.
The intensity of pain fluctuates. It can be influenced by factors like prolonged sitting, drinking alcohol, eating spicy foods, fatigue, or sexual activity.

So, if you're experiencing pain in these areas, don't rely on guesswork or get overly anxious. The best approach is to consult a professional urologist. Get examined to determine the exact cause, so you can find a targeted solution.