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Erectile dysfunction (ED) affects the lives of many middle-aged men and their partners. The term erectile dysfunction covers a range of disorders, but usually refers to the inability to obtain an adequate erection for satisfactory sexual activity. Although erectile dysfunction, formerly called impotence, is more common in men older than 65, it can occur at any age. An occasional episode of erectile dysfunction happens to most men and is normal. As men age, it's also normal to experience changes in erectile function. Erections may take longer to develop, may not be as rigid or may require more direct stimulation to be achieved. Men may also notice that orgasms are less intense, the volume of ejaculate is reduced and recovery time increases between erections. Erectile dysfunction may also be a sign of a physical or emotional problem that requires treatment.

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Erectile dysfunction was once a taboo subject, but more men are seeking help. Doctors are gaining a better understanding of what causes erectile dysfunction and are finding new and better treatments.

This Website discusses all about erectile dysfunction, physiology of the normal erection and the pathophysiology, and treatment of ED.

What is Erectile Dysfunction?

Erectile dysfunction or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis for satisfactory sexual intercourse regardless of the capability of ejaculation. There are various underlying causes, such as diabetes, many of which are medically reversible.

The causes may be physiological or psychological viagra price comparison. Psychological impotence can often be helped by almost anything that the patient believes in; there is a very strong placebo effect.

Due to its embarrassing nature and the shame felt by sufferers, the subject was taboo for a long time, and is the subject of many urban legends. Folk remedies have long been advocated, with some being advertised widely since the 1930s. The introduction of perhaps the first pharmacologically effective remedy for impotence, sildenafil (trade name Viagra), in the 1990s caused a wave of public attention, propelled in part by the news-worthiness of stories about it and heavy advertising.

The Latin term impotentia coeundi describes simple inability to insert the penis into the vagina. It is now mostly replaced by more precise terms.

Signs and symptoms:

Erectile dysfunction is characterized by the inability to maintain erection. Normal erections during sleep and in the early morning suggest a psychogenic cause, while loss of these erections may signify underlying disease, often cardiovascular in origin. Other things leading to erectile dysfunction are diabetes mellitus (causing neuropathy) or hypogonadism (decreased testosterone levels due to disease affecting the testicles or the pituitary gland).

Here are some causes of Erectile Dysfunction:

* Arousal: The first step is sexual arousal, which men obtain from the senses of sight, touch, hearing and smell, and from thoughts about viagra price comparison.

* Nervous system response: The brain communicates the sexual excitation to the body's nervous system, which activates increased blood flow to the penis.

* Blood vessel response:. A relaxing action occurs in the blood vessels that supply the penis, allowing more blood to flow into the shafts that produce the erection.

Physiology of normal erections:

Penile erections involve an integration of complex physiologic processes involving the CNS, peripheral nervous system, and hormonal and vascular systems. Any abnormality involving these systems, whether from medication or disease, has a significant impact on the ability to develop and sustain an erection, ejaculate, and experience orgasm. Tumescence, the vascular filling of the cavernous bodies, relies on neural and hormonal mechanisms operating at various levels of the neural axis. This is unique among visceral functions because it requires central neurological input.

Andersson et al viagra price comparison summarized some of the information related to the pathways involved in erectile function. The degree of contraction of corpus cavernosal smooth muscle determines the functional state of the penis. The balance between contraction and relaxation is controlled by central and peripheral factors that involve many transmitters and transmitter systems. At the cellular level, smooth muscle relaxation occurs following the release of acetylcholine from the parasympathetic nerves.

Pathophysiology of erectile dysfunction:

Erectile Dysfunction is essentially a vascular disease. It is often associated with other vascular diseases and viagra price comparison conditions such as diabetes, hypertension, and coronary artery disease. Other conditions associated with Erectile Dysfunction include neurologic disorders, endocrinopathies, benign prostatic hyperplasia, viagra price comparison, and depression. Conditions associated with reduced nerve and endothelium function, such as aging, hypertension, smoking, hypercholesterolemia, and diabetes, alter the balance between contraction and relaxation factors. These conditions cause circulatory and structural changes in penile tissues, resulting in arterial insufficiency and defective smooth muscle relaxation. In some patients, sexual dysfunction may be the presenting symptom of these disorders.

Treatment:

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What is an eCheck?

eCheck, a new payment instrument combining the security, speed and processing efficiencies of all-electronic transactions with the familiar and well-developed legal infrastructure and business processes associated with paper checks, is the first and only electronic payment mechanism chosen by the United States Treasury to make high-value payments over the public Internet.

The Electronic Check:

  • leverages the check payments system, a core competency of the banking industry.
  • fits within current business practices, eliminating the need for expensive process re-engineering.
  • works like a paper check does but in pure electronic form, with fewer manual steps.
  • is designed to meet the needs of businesses and consumers in the 21st century, using state of the art security techniques.
  • can be used by all bank customers who have checking accounts, including small and mid-size businesses which currently have little access to electronic payment systems.
  • enhances existing bank accounts with new e-commerce features.

Let's examine how eCheck works for the banking industry and the clients it serve. There are fundamental characteristics and differences between paper check, the eCheck and other Electronic Funds Transfer (EFT) transactions. eCheck will be an important payments instrument in transitioning businesses and consumers into the emerging world of electronic commerce.

First, what is the eCheck?

An eCheck is the electronic version or representation of a paper check.
eChecks:

  • contain the same information as paper checks contain
  • are based on the same rich legal framework as paper checks
  • can be linked with unlimited information and exchanged directly between parties
  • can be used in any and all remote transactions where paper checks are used today
  • enhance the functions and features provided by bank checking accounts
  • expand on the usefulness of paper checks by providing value-added information

How do echecks work?

eChecks work the same way a check does.

  • the check writer "writes" the eCheck using one of many types of electronic devices and "gives" the eCheck to the payee electronically.
  • the payee "deposits" the Electronic Check, receives credit, and the payee's bank "clears" the eCheck to the paying bank.
  • the paying bank validates the eCheck and then "charges" the check writer's account for the check.

Why use echecks?

eChecks have important new features. They offer:

  • the ability to conduct bank transactions, yet are safe enough to use on the Internet
  • unlimited, but controlled, information carrying capability
  • reduces fraud losses for all parties
  • automatic verification of content and validity
  • traditional checking features such as stop payments and easy reconciliation
  • enhanced capabilities such as effective dating

The eCheck:

  • can be used by all account holders, large and small, even where other electronic payment solutions are too risky, or not appropriate
  • is the most secure payment instrument available today
  • provides rapid and secure settlement of financial obligations
  • can be used with existing checking accounts
  • can be initiated from a variety of hardware platforms and software applications

What is eCheck technology?

eCheck technology is software and hardware developed by FSTC members to:

  • minimize start up expenses
  • apply universal industry standards
  • provide ubiquity for participants

eChecks are based on:

  • the Financial Services Markup Language (FSML)
  • strong digital signatures using any available algorithm
  • secure hardware tokens such as smartcards
  • digital certificates
  • banking and business practices

eChecks are designed to leverage technology capabilities that were not available as recently as three years ago. As technology continues to evolve, the FSTC will capitalize on new developments by integrating significant break-through technologies into the echeck's open architecture.

How secure are echecks?

eChecks are the most secure payments instrument or transaction ever designed or developed. echecks are designed to utilize state of the art security techniques of :

  • authentication
  • public key cryptography
  • digital signatures
  • certificate authorities
  • duplicate detection
  • encryption

eChecks further enhance banking practices with added security so that even breaking the cryptographic protections would not necessarily allow a fraudulent transaction to be paid.

Are echecks really checks?

eChecks provide the best of both paper and electronic laws and regulations to bank customers:

  • echecks are based on check law and have the same characteristics of paper checks but in all-electronic form. Account agreements include provisions for eCheck transactions.
  • the eCheck also provides consumers the protections and rights from Regulation E, which limits liability and establishes dispute resolution timeframes.
  • coupling the eCheck security technology with a sound legal structure reduces the exposure and risk of loss to banks and their clients.

What do echecks provide that will permit banks to sustain their leadership position in the payments system?

eChecks:

  • leverage and strengthen the relationship between the account holder and banking institution.
  • continue to emphasize the strengths of the check as a payments instrument
  • are based on a universal set of technologies to permit rapid and effective deployment
  • target virtually all payment system participants - from individual check writers and receivers to large organizations, corporation, and agencies.

Why will echecks lead the way?

eChecks leverage multiple new technologies and will set the stage for other new products and services. At the same time, echecks integrate into today's business practices and coexist with paper check processing.
eChecks are:

  • easily understood by bank customers
  • easy to use
  • extremely safe
  • easy to process

Conclusion
eChecks will lead the way to an Electronic Commerce environment for businesses and consumers.

  • banks are providing the leadership
  • banks are controlling the process
  • banks are evolving the payments mechanism

eChecks will succeed because eCheck meets real business needs and is based on the paper check - the most popular non-cash payment choice, and a core competency of banks.


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