You took your ED medication and your erection won't go down even after your second orgasm.

The cause: An erection that lasts more than 4 hours and isn't relived by orgasm is a medical disorder called priapism, named for the Greek fertility god Priapus, who was endowed with an exceptionally huge, always-erect penis, which he wielded against intruders. Priapism happens when blood that flowed into the penis to inflate an erection doesn't properly drain out. There can be many causes beyond a reaction to an ED drug or other medication, including injury or drug and alcohol abuse. It's very rare, but dangerous. For most men who experience it, the pain prods them to the E.R.

The cure: Medications are used to decrease blood flow to the penis and a needle may be used to drain the blood because a prolonged erection can cause scar tissue to develop.

Your semen has a reddish tint, and it drips out rather than shoots when you ejaculate.

The cause: When infections begin to heal, scar tissue can form and create a blockage in the ejaculatory duct. "It's like a five-lane highway becoming a two-lane highway," says Fisch. The red tint is blood from the initial infection. Your ejaculate volume may drop below the average of half a tablespoon and continue to dribble like an NBA point guard after you achieve orgasm.

The cure: You can function with dribbly ejaculate, but it's kind of a buzz kill. Fortunately, there's a surgical solution. The formal term is "transurethral resection of the ejaculatory ducts," but it's simpler than it sounds. "We just scrape out the scar tissue, and that opens it all up," says Fisch. You can resume sexual activity in 7 to 10 days.

You are under age 30 and in great shape, but have trouble maintaining an erection.

The cause: According to the American Urological Association, about 25 percent of erectile-dysfunction cases are psychological, and the cause could be anything from relationship issues to performance anxiety. For example, a man may have a sexual experience after drinking and fail to get it up. "In subsequent sexual attempts without alcohol, he'll remember that episode, think there's something wrong with him, and be unable to perform," says Karen Boyle, M.D., director of reproductive medicine and surgery at the Johns Hopkins Brady Urological Institute.

The cure: Try having sex after breakfast. Your testosterone levels peak around 7 a.m., so your hormones, and your penis, should be at full attention then. If that doesn't work, see a urologist to rule out physical factors and then try counseling to address any underlying issues. Even if a psychological cause is suspected, a pharmaceutical option can offer a helping hand. "A little added self confidence--such as receiving some extra lift from Viagra--goes a long way in this arena," says Andrew McCullough, M.D., director of the male sexual health program and male fertility and microsurgery at New York University Medical Center. For more help, try one of these 10 Ways to Last Longer in Bed.

When you use the rest room, the urine sometimes dribbles out. You are over age 50 and you have to pee more frequently than ever before.

The cause: A weak urine stream, dribbling after urinating, and feeling that the bladder is not completely empty are some classic symptoms of something called BPH, benign prostatic hyperplasia, a common problem among men your age and older. It's caused by an enlarged prostate, which presses down on the urethra (urine tube) and disrupts the flow of urine. BPH is not prostate cancer, but it does need to be diagnosed and treated by a urologist.

The cure: Doctors usually take a step-by-step approach, starting with behavioral changes such as diet and exercise in combination with medications like Flomas to help ease symptoms. If symptoms persist or the prostate is large, urologists can use minimally invasive techniques, such as microwave and laser therapies, and transurethral needle ablation. Another effective technique is TURP, for transurethral resection of the prostate, which involves removal of the core of the prostate through an instrument passed through the urethra. It typically requires a two-day hospital stay.

You're 35, and your orgasms seem less intense than they once were.

The cause: As a man ages, he gradually begins to lose smooth-muscle sensitivity in his penis, a process that can affect ejaculation. And while this can certainly hinder orgasm intensity, it's more of a problem for men 50 or older. "A 35-year-old man should have strong orgasms--so if there's a problem, head to your physician," says Steven Lamm, M.D., a professor of medicine at New York University and the author of The Hardiness Factor. There could be a number of causes, including a new medication (such as the hair-loss treatment Propecia), too much booze, or too little testosterone.

The cure: If your doctor rules out the above and other possible causes, start employing this variation on the stop-start technique: Before you reach the point of no return, stop thrusting, pull out, and ask your partner to gently squeeze the head of your penis. Wait a minute or two until you've cooled down, and then rev your engine again. Have her hit pause once more. When you finally ejaculate, the feeling should be significantly more intense from all the anticipation. Want a fail-proof plan to boost your vitality in bed? Follow these 9 Rules for Stronger Erections.

You're depressed and your sex drive seems non-existent.

The cause: Lethargy and no interest in sex are among the classic symptoms of clinical depression, but they are also common in men with hypogonadism. Doctors use this term to describe below normal blood levels of testosterone when the testicles have stopped producing enough of the male hormone. Depression, belly fat, and erectile issues are other symptoms of hypogonadism. Testosterone levels in men normally decrease with age starting around year 30. Testosterone supplementation isn't recommended unless there is a significant drop off in T levels, which your doctor can detect through a blood test.

The cure: Testosterone replacement therapy, where the hormone is added through a patch placed on the body or a gel applied to the shoulders, chest, arms, and abdomen. But testosterone supplementation should be considered carefully. Pumping added testosterone into your body can cause your system to cut its own production, meaning your testicles will shrink over time. There are health concerns, too. For example, testosterone therapy may contribute to baldness, sleep apnea, lowering of HDL (good) cholesterol, breast enlargement, risk of heart disease, and possibly stimulate the noncancerous growth of the prostate or possibly fuel the growth of existing prostate cancer. Want a faster solution? Check out these 3 Easy Ways to Spice Up Your Sex Life.

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