Erectile dysfunction: when an erection is not firm enough or does not last

How an erection becomes firm

An erection depends on arousal, nerves, and blood vessels working together. Smooth muscle in the erectile tissue relaxes, more blood flows in, and the filled erectile tissue restricts blood flowing back out through the veins. Pelvic floor muscles also contribute to firmness. The review Erectile hydraulics describes these mechanisms.

Size and firmness are therefore different things. A visible erection may still be too soft for penetration, while an erection that is not maximally firm throughout may be sufficient for the sex you want. There is no universal firmness number everyone must reach. What matters is whether your erection is sufficient and reliable for you.

The four grades: what the Erection Hardness Score means

The Erection Hardness Score, or EHS, translates your own perception into four simple grades. It can help you describe more precisely what has changed when talking with a doctor.

EHS 1: larger, but not hard

The penis increases in size but does not yet have sufficient firmness.

EHS 2: hard, but not hard enough for penetration

An erection is present, but it is not firm enough for penetration.

EHS 3: hard enough for penetration, but not completely hard

Penetration is possible even though the erection does not reach the highest level of firmness.

EHS 4: completely hard and rigid

This is the highest grade on the scale.

The scale has been examined in research including a study of the relationship between EHS and intercourse. It describes firmness, not the cause of a problem or the quality of sex. EHS 3 is not automatically abnormal, and EHS 4 guarantees neither desire nor comfort. Duration matters too: a firm erection that fades quickly can still be a significant problem.

Why an erection sometimes fades

Sexual arousal does not follow a straight line. Touch, pace, distraction, tiredness, and a sense of safety can change during an encounter. An erection that softens during a pause and returns with pleasurable stimulation is different from recurring difficulty despite adequate arousal.

Putting on a condom or preparing for penetration can add pressure: now it absolutely has to work. Attention then shifts from touch to checking the erection. A pause, more time, and an approach without a fixed goal can relieve that pressure. Check the fit and practice putting on the condom when you feel relaxed, so protection remains in place even when you are nervous.

For a later medical appointment, remembering typical situations is enough. You do not have to test or rate your erection every day.

Physical causes, stress, and medication

A simple split between physical and psychological causes often does not fit. An erection that is a little less reliable for physical reasons can create performance pressure, which can make the next encounter more difficult.

Blood vessels and metabolism

Diabetes, high blood pressure, elevated blood lipids, and smoking can impair blood vessel function. Inactivity and significant excess weight can also contribute.

Nerves, hormones, and changes in the penis

Nerve injuries, some neurological conditions, and pelvic procedures can affect erections. Hormonal disorders, pain, or a new curvature also warrant assessment.

Psychological and situational pressures

Stress, anxiety, depressive symptoms, conflict, and distressing sexual experiences can affect arousal and erections. This also applies to younger people.

Medication and substances

Some blood pressure medicines, antidepressants, sedatives, and hormone treatments may contribute. Heavy alcohol use and other drugs can also interfere. Do not stop prescribed medication on your own; discuss how the timing of symptoms relates to it.

The NIDDK information on symptoms and causes provides an overview of these possible triggers. A list like this cannot tell you which cause applies to you.

What morning erections and masturbation can tell you

If erections work in the morning or during masturbation but are unreliable during partnered sex, expectations and context may play an important role. That does not make your symptoms imaginary. It also does not mean attraction is missing or that anyone is to blame.

Conversely, not noticing a morning erection does not prove that you have a blood vessel condition. Sleep and the point at which you wake influence what you notice. These observations are clues to discuss, not reliable self-tests. Physical and situational factors can coexist.

Desire, erection, and orgasm are connected, but they are not identical. A less firm erection alone therefore does not tell you how aroused someone is. The article about orgasm explores how they relate.

Why cardiovascular health matters too

New or worsening erection problems can be a reason to check blood pressure, blood glucose, blood lipids, and other vascular risks. Erectile dysfunction and cardiovascular disease share important risk factors; when the symptoms involve blood vessels, erectile dysfunction may precede a diagnosis of heart disease.

This does not mean every soft erection signals a heart problem. It explains why a good assessment looks beyond sexual function. The EAU guideline on erectile dysfunction specifically addresses this connection.

What happens during a medical assessment

A first appointment can be with a primary care doctor or a urologist. It usually starts with the history: when did the problem begin, how often does it happen, and does it affect getting firm, staying firm, or both? Questions about desire, pain, medication, existing conditions, and sources of stress follow.

Depending on your situation, a physical examination, blood pressure measurement, and blood tests may follow, for example to assess glucose metabolism, blood lipids, and hormones. An abnormal result needs to be interpreted alongside your symptoms. Ultrasound and specialized function tests are not necessary at every first appointment. The NIDDK information on diagnosis explains the process.

You can write down these points before your appointment:

• When it started, how often it happens, and situations in which erections work better or worse.
• Whether the erection does not become firm enough, fades early, or both.
• Changes in desire, pain, curvature, ejaculation, or urination.
• All medications and supplements, including erection products you bought yourself.
• What you want from treatment and what bothers you most.

Can erection firmness be measured objectively?

Yes, but different methods measure different properties. Devices such as RigiScan can record nighttime changes in circumference and firmness; Doppler ultrasound examines blood flow. These tests answer specific diagnostic questions. A single measurement replaces neither a conversation nor an understanding of your everyday sexual experience.

Elastography uses ultrasound to examine tissue properties. A small study involving 37 healthy men found measurable changes during erections. That does not establish a universal upper limit for firmness or a need for routine testing. Firmness under sideways pressure and resistance to buckling are also different measurements.

For you, the more practical question is usually: which test would actually change what happens next in treatment?

What you can change yourself

There is no reliable instant trick for every cause. Steps that support your health and reduce sexual pressure make sense: regular exercise, less alcohol, stopping smoking, and enough rest. This is neither a guarantee nor an assignment of blame. People who live healthily can still have erection problems that need treatment.

In everyday sex, it can help not to link touch immediately to penetration. Allow room for a pause, other forms of closeness, or a slower start. If the erection softens, the whole encounter does not have to end. How does sex work? offers a broader overview.

Start with changes you can actually make instead of trying to perfect sleep, exercise, diet, and sex all at once. For recurring symptoms, these steps can complement treatment, but they should not keep pushing your appointment further away.

Breaking the cycle of pressure and checking

After an unsettling experience, anticipating the next time can itself become a problem. During the encounter, you keep checking whether the erection is holding. This takes your attention away from what arouses you, and every change feels like proof that things are going wrong again.

Talking outside a sexual situation can relieve pressure. You can explain what makes you feel uncertain, which touches feel good, and that a pause does not mean rejection. Together, you can agree that penetration is an option, without making it something that has to happen.

Psychosexual counseling or sex therapy can help, particularly with anxiety, avoidance, or relationship conflict. It can be combined with medical treatment. If premature ejaculation is also troubling you, mention both problems so treatment can take both into account.

Sildenafil and tadalafil: what tablets can do

Sildenafil and tadalafil belong to a group called PDE-5 inhibitors. They support the body's erectile response but do not create desire, and they require sexual stimulation. Which medicine is suitable depends partly on coexisting conditions, other medications, and your preferred timing.

A meal can delay sildenafil's onset of action. Tadalafil offers a longer window of effect; in some cases, a doctor may prescribe daily use. A longer window does not mean a continuous erection. The EMA information on tadalafil explains its use.

A disappointing first attempt does not prove that the treatment cannot help. Discuss timing, stimulation, and expectations instead of increasing the dose yourself or combining several products. Possible side effects include headaches, facial flushing, and indigestion. The EMA information on sildenafil describes its effects, side effects, and restrictions.

PDE-5 inhibitors must not be combined with nitrates for angina or with poppers. Blood pressure can fall dangerously. Certain other medicines, such as riociguat, also rule out a combination. Before treatment, disclose all medicines and substances you use. With serious heart problems, it is also necessary to assess whether sexual exertion is currently safe.

Buying from uncertain sources does not replace this assessment. Ask a doctor and pharmacist about an approved product.

What other treatments are available?

If tablets are unsuitable or do not help enough, there are still other treatment options. The choice depends on what is affecting your erection and which method you can manage in practice.

Vacuum erection devices

Negative pressure draws blood into the penis, and a suitable ring can help maintain the erection. How to use the device, possible side effects, and safe duration of use should be explained.

Local medication and injections

Certain medicines can be administered in the urethra or injected into the erectile tissue. This requires medical instruction and a clear plan for dealing with an erection that lasts too long.

Penile implants

Surgery may be an option for selected people when other methods are unsuitable or unsuccessful. Benefits, risks, and the permanent change need thorough discussion beforehand.

The NIDDK information on treatment describes these options and accompanying counseling. Alongside effectiveness, decisions should consider tolerability, how a treatment is used, and what you want from your sexual life.

Testosterone, pelvic floor training, and supplements

Testosterone is not a general erection booster. Treatment may be considered for a confirmed deficiency with matching symptoms, not simply because an erection is softer. A low result is checked with another morning blood sample taken while fasting. This is particularly important when trying to conceive: taking testosterone can suppress sperm production. The Endocrine Society guideline advises against this treatment when planning to conceive in the near future.

Supervised pelvic floor training may help some people. A small randomized trial studied exercises combined with biofeedback, which provides feedback on muscle activity. That does not promise success for any home exercise routine. If you have pain or muscle tension, get guidance on which training is appropriate for you. Investigating other causes remains important.

Be especially cautious with supplements and supposedly natural erection-enhancing blends. Many products lack convincing evidence of effectiveness; some contain undeclared pharmaceutical ingredients. The information on sexual enhancement products from the US research center NCCIH highlights this problem. For any additional treatment offered, ask how strong the evidence is that it will help with your condition, what risks it carries, and which alternatives exist.

Erection problems when trying to conceive

When sex has to work on fertile days, extra time pressure can arise. Erection firmness does not reliably indicate sperm quality. Difficulties with intercourse and a possible fertility problem should be considered separately.

Mention that you are trying to conceive during the consultation, including before any medication is prescribed. This allows treatment and family planning to be coordinated. The article Erection problems when trying to conceive explores this particular situation in more detail.

When to seek medical help

Make an appointment if symptoms recur, get worse, or trouble you. This is particularly relevant with diabetes, vascular risk factors, new medication, markedly reduced desire, or pain. A new curvature, a lump you can feel in the penis, blood in urine, or significant urinary symptoms also need assessment. With blood in semen, recurrence and accompanying symptoms are among the factors that matter.

If an erection has lasted three to four hours and is not going down, go to an emergency department immediately. Severe pain means you need help earlier. With sickle cell disease, this already applies to a painful erection lasting more than an hour. Such a persistent erection, known as priapism, can damage tissue. Do not wait for sex or masturbation to end it. The NHS information on priapism explains the urgency.

Acute chest pain, severe shortness of breath, or sudden paralysis or speech difficulties are emergency signs: call emergency services (112 in Germany). Tell the care team which erection medicine you took and when, especially before medication for chest pain is given. Sudden severe testicular pain or sudden loss of vision or hearing after taking an erection medicine also requires immediate medical assessment.

Myths and facts

Only a maximally firm erection is normal.

Firmness can vary. Sufficient function, reliability, and your symptoms matter, rather than continually achieving the highest grade.

In young people, it is always psychological.

Physical causes are possible at younger ages too. Age alone does not replace an assessment.

If it works alone, attraction to a partner is missing.

You cannot draw that conclusion from this pattern. Context, pressure, and stimulation can differ substantially.

An erection medicine automatically removes the cause.

Medication can support erections but does not automatically resolve vascular problems, side effects, or distressing performance pressure.

Conclusion

Good treatment for erectile dysfunction begins by asking what has changed and what you need. Whether your erection stays too soft, fades early, or becomes unreliable only under pressure, recurring symptoms can be assessed and often treated. Discuss the problem openly, consider possible physical causes, and leave room for sex without constantly judging firmness.