Siamak N. Nabili, MD, MPH
Dr. Nabili received his undergraduate degree from the University of California, San Diego (UCSD), majoring in chemistry and biochemistry. He then completed his graduate degree at the University of California, Los Angeles (UCLA). His graduate training included a specialized fellowship in public health where his research focused on environmental health and health-care delivery and management.
Melissa Conrad Stöppler, MD
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
- Erectile dysfunction (impotence) facts
- What is erectile dysfunction?
- What is normal penis anatomy?
- How common is erectile dysfunction?
- How does erection occur?
- How is erection sustained?
- What are the risk factors for erectile dysfunction?
- What causes erectile dysfunction?
- How is erectile dysfunction diagnosed?
- What is the treatment for erectile dysfunction?
- What medications are used to treat erectile dysfunction?
- Oral phosphodiesterase type 5 (PDE5) inhibitors
- Sildenafil (Viagra)
- Vardenafil (Levitra)
- Tadalafil (Cialis)
- Avanafil (Stendra)
- Intracavernosal injections
- Intraurethral suppositories
- How effective is testosterone in treating erectile dysfunction?
- Can low testosterone level be replaced?
- Vacuum devices
- Surgery for erectile dysfunction
- What about psychological therapy for erectile dysfunction?
- What will research is being done for erectile dysfunction?
- Impotence (Erectile Dysfunction, ED) FAQs
- Find a local Urologist in your town
Erectile dysfunction (impotence) facts
- Erectile dysfunction (ED), also known as impotence, is the inability to achieve or sustain an erection for satisfactory sexual activity.
- Erectile dysfunction is common; experts have estimated that erectile dysfunction affects 30 million men in the Untied States.
- The causes of erectile dysfunction include aging, high blood pressure, diabetes mellitus, cigarette smoking, atherosclerosis, depression, nerve or spinal cord damage, medication side effects, alcoholism or other substance abuse, and low testosterone levels.
- Erectile dysfunction is treatable in all age groups.
- Treatments include psychotherapy, adopting a healthy lifestyle, oral PDE5 inhibitors (Viagra, Levitra, Cialis, Stendra, and Staxyn), intraurethral medications (MUSE), intracavernosal injections, vacuum devices, surgery, and working with doctors to avoid medications that can impair erectile function.
- New research is ongoing in the field of erectile dysfunction to find more improved and effective therapies.
What is erectile dysfunction?
Erectile dysfunction (ED), also known as impotence, is the inability to achieve or sustain an erection for satisfactory sexual activity. Erectile dysfunction is different from other conditions that interfere with male sexual intercourse, such as lack of sexual desire (decreased libido) and problems with ejaculation and orgasm (ejaculatory dysfunction). This article focuses on the evaluation and treatment of erectile dysfunction.
What is normal penis anatomy?
The penis contains two chambers, called the corpora cavernosa, which run the length of the upper side of the penis (see figure 1 below). The urethra, which is the channel for urine and ejaculate, runs along the underside of the corpora cavernosa. Filling the corpora cavernosa is a spongy tissue consisting of smooth muscles, fibrous tissues, spaces, veins, and arteries. A membrane, called the tunica albuginea, surrounds the corpora cavernosa. Veins located in the tunica albuginea drain blood out of the penis.
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