The prostate gland produces seminal fluid for the man’s sexual reproductive system. Cancer of the small walnut-shaped gland is the most common form of cancer for men, according to the Mayo Clinic. Symptoms can help with early detection and treatment.

There are often no symptoms in the early stages of the disease, the Cancer Treatment Centers of America noted. The symptoms vary among men, so routine screenings through rectal exams or prostate tests are recommended.

Here are five signs and symptoms of prostate cancer, according to the Cancer Treatment Centers of America and WebMD. The symptoms could indicate other health conditions.

Special: Top Doc Shares Simple Daily Habits for Healthy Prostate

1. Urinary problems may include a frequent need to urinate, especially during the night. Men may have difficulty starting or stopping urination. They may notice leaking when coughing or laughing. Pain or burning sensations may occur during urination. There may be a decrease of flow of the urine or blood in the urine.

2. Erectile dysfunction or difficulty in getting and sustaining an erection may occur.

3. Painful or burning ejaculation or blood in the semen can be among the symptoms.

4. Men may notice swelling in the legs, pelvic area, lower back, ribs, upper thighs, or lower extremities.

5. There could be numbness, weakness or pain in the hips, legs or feet, or bone pain that doesn’t go away. Difficulty walking could occur along with constipation.

The development of prostate cancer differs among men with the disease, the Mayo Clinic said. It could grow slowly and remain in the gland, not posing serious harm. Some types of the cancer don’t need treatment or require little treatment while aggressive forms can spread quickly.

Because prostate cancer symptoms often aren’t noticed in the early stages, men are advised to get screenings at age 50 or earlier if they have certain risk factors.

Alert: 5 Warning Signs of Prostate Cancer. How Many Do You Have?

A man’s risk of prostate cancer increases with age, especially after age 50, the Mayo Clinic said. Having a family history of prostate or breast cancer increases the risk. Obesity increases the risk and may make it more difficult to treat in advanced cases. Black men have a greater risk of prostate cancer.

Related Stories:

• Best Treatments for Prostate Cancer
• Is the PSA Test Relevant for Prostate Cancer?