
Dr Tan Kok Kuan
Men’s Health & Sexual Health Doctor
MBBS (S’pore), Cert. Men’s Health, Cert. Clinical Dermatology,Member, Academy for Men’s Health (Singapore)Member, Singapore Association for the Study of ObesityMember, International Society of Sexual Medicine

Signs of erectile dysfunction (ED) often come early, yet they are easy to overlook. Many men tell themselves it’s just stress, tiredness, ageing or that they are having a bad day — anything but a real issue. Since these changes are subtle and gradual, they’re easy to ignore, especially when erections have not stopped completely. Embarrassment and fear of receiving an official diagnosis are often the culprits behind delaying treatment.
Luckily, treating ED isn’t so hard when addressed in the beginning stages. Recognising these signs can make a meaningful difference, so if you suspect that ED is beginning to develop, there is no shame in simply learning a bit more about the symptoms.
There is an ongoing assumption that erectile dysfunction is only present in older men. However, studies show that one in three men experience some form of this condition across their lifetime. There are both physical and mental factors responsible for the onset of ED, sometimes even overlapping as the condition progresses.
Physical factors tend to become more common from the 40s onwards, but they can occur earlier, especially when underlying health conditions are present. Some common factors are:
Psychological factors are the most common contributors to ED in men aged 20-30. Oftentimes, stress, self-consciousness and lifestyle changes can lead to this condition. Potential causes are:
Early erectile trouble often doesn’t mean erections stop completely. Instead, men may notice it takes longer to get an erection or that it becomes harder to maintain one throughout sexual activity. Erections may fade midway or require more focus and stimulation than before. When this happens repeatedly, it can signal early changes in blood flow, nerve function, or hormonal balance.
A common early sign of erectile dysfunction is a noticeable change in erection firmness. It may become noticeable that less blood is flowing into the penis, indicating possible circulation issues or reduced responsiveness of erectile tissue.
A drop in sexual desire can sometimes appear before obvious erection problems. Men may feel less interested in sex, less mentally aroused or less responsive to sexual cues. This can be linked to stress, hormonal changes such as low testosterone, fatigue or emotional strain.
Morning erections occur naturally due to healthy nerve signalling and blood flow. If they suddenly stop happening or you notice a reduction in their frequency or firmness, it could be an early sign of erectile dysfunction. Experiencing this over a consistent period may point to underlying vascular issues or a change in your hormones.
Sudden feelings of anxiety can develop as a response to early erectile changes. After one or two difficult experiences, men may begin worrying about losing an erection, which increases stress during intimacy and creates a repeating cycle that worsens over time.
If you’re noticing one or more of these signs, it doesn’t automatically mean you have erectile dysfunction. However, it is worthwhile to pay attention to these changes. If they persist for several weeks, happen more frequently or begin to affect your confidence or relationships, they may be worth discussing with a medical professional.

Erectile concerns are common and nothing to be embarrassed about. Seeking advice early can be reassuring in itself, and speaking with a doctor allows you to get clear answers, personalised guidance and peace of mind — whether treatment is needed or not.
At Dr Tan Medical Center, we take a discreet, professional and patient-centred approach to erectile dysfunction. Dr Tan Kok Kuan has extensive experience in men’s sexual health and provides thorough assessments, clear explanations and personalised treatment plans tailored to each individual’s needs.
If you’ve noticed ongoing changes in your erections, libido or sexual confidence, seeking advice early can offer reassurance and prevent symptoms from progressing. Contact us today to arrange a consultation.

Dr Tan Kok Kuan
MBBS (S’pore), Cert. Men’s Health, Cert. Clinical Dermatology, Member, Academy for Men’s Health (Singapore) Member, Singapore Association for the Study of Obesity Member, International Society of Sexual Medicine
Dr Tan Kok Kuan is an experienced doctor specialising in men's health, sexual health and medical weight loss. With over 20 years of clinical experience, he offers confidential and effective screening and treatment services. Notably, Dr Tan was one of the key authors of Singapore’s National HIV PrEP Guidelines and the national blueprint to end HIV transmission by 2030. Dr Tan frequently speaks at local and international conferences and has been featured in the media, where he helps raise public awareness around men’s health and sexual health.
“Every patient deserves our fullest attention.”
10 Sinaran Drive #09-30, Novena Medical Centre, Singapore 307506
Tel: (+65) 6513 0359 | WhatsApp: (+65) 9750 5037
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