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Health Encyclopedia: Erectile Dysfunction (Impotence) Introduction

Introduction

Erectile dysfunction (impotence) is the inability to achieve or maintain an erection sufficiently rigid for sexual intercourse, ejaculation, or both. Sexual drive and the ability to have an orgasm are not necessarily affected. Because all men experience erection problems from time to time, doctors consider impotence to be present if attempts at intercourse fail on at least 25% of attempts.

Erectile dysfunctionis not new in medicine or human experience, but it is not easily or openly d...

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Expert & Community Posts

The Promise of Actemra to Relieve Rheumatoid Arthritis Pain

By Mark Borigini, M.D. , Health Expert

...improvement in things such as fatigue and mental function. Actemra is the first humanized... Read more »

Old, New and Future Approaches to Asthma Treatment

By Fred Little , Health Expert

...action of albuterol, which was short-acting. Their function is essentially the same - like the... Read more »

Introducing Dr. Kantor: Neurologist and MS Expert

By Dr. Kantor , Health Expert

Hello, I am excited to be a member of the MS Central community and I look forward to sharing with... Read more »

How Much Vitamin D?

By David Mendosa , Health Expert

...Vitamin D also probably helps us maintain a healthy immune system. It also seems to help... Read more »

Reason to Rejoice - Research Breakthrough Reverses MS Disability

By Mandy Crest , Health Expert

...central nervous system. In patients with MS, the immune system mistakenly attacks myelin, the... Read more »

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Health Guide

Causes of Cardiac Enlargement

...of angina and heart attack. Heart failure results because thickened or dilated heart muscle cannot function effectively as a pump. The diseased muscle cells in both types of enlargement are... Read more »

Stress: The Body's Response

...stand up.Metabolic Response to Acute StressStress shuts down digestive activity, a nonessential body function during short-term periods of hard physical work or crisis.The Relaxation Response: the... Read more »

Stroke Information

...oxygen, but it cannot store it. Brain cells require a constant supply of oxygen to stay healthy and function properly. Therefore, blood needs to be supplied continuouslyto the brain through two... Read more »

Fibromyalgia: Causes

...system known as the hypothalamus-pituitary-adrenal gland (HAP) axis. The HAP axis controls important functions, including sleep, response to stress, and depression. Changes in the HAP axis appear... Read more »

Hodgkin's Disease: Introduction

...foreign substances, such as bacteria. This exposure prompts the lymphocytes to perform their immune functions. The size of a lymph node varies generally from that of a pinhead to a bean. Most... Read more »

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Primary amenorrhea

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