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A study done at the Medical College of Georgia has found that venom from the Brazilian wandering spider contains a toxin, called Tx2-6, that causes erections. Scientists believe that combining this toxin with existing medication such as Viagra may lead to an effective treatment for erectile dysfunction. What Causes Male Sexual Problems? Psychological causes: These include work-related stress and anxiety, concern about sexual performance, marital or relationship problems, depression, feelings of guilt, and the effects of a past sexual trauma. buy levitra generic Treatment for erectile dysfunction on the NHS: The Department of Health states: "From 1 July 1999 only those patients suffering from one of the specified medical conditions are eligible to receive drug treatments for impotence on the NHS. Other men can receive a private prescription from their own GP." purchase cialis online buy cialis The Latin term impotentia coeundi describes simple inability to insert the penis into the vagina. It is now mostly replaced by more precise terms. The study of erectile dysfunction within medicine is covered by andrology, a sub-field within urology. Nocturnal penile tumescence (NPT) - It is normal for a man to have five to six erections during sleep, especially during rapid eye movement (REM). Their absence may indicate a problem with nerve function or blood supply in the penis. There are two methods for measuring changes in penile rigidity and circumference during nocturnal erection: snap gauge and strain gauge. A significant proportion of men who have no sexual dysfunction nonetheless do not have regular nocturnal erections. buy generic propecia 5mg buy propecia Mental heath (psychological) causes - Various mental health conditions may cause you to develop ED. For example: Stress. For example, due to a difficult work or home situation. Anxiety. Relationship difficulties. Depression. pfizer online viagra buy viagra How Is Erectile Dysfunction Treated? There are many different ways erectile dysfunction can be treated, including oral medications, sex therapy, penile injections, suppositories, vacuum pumps, and surgery. Each type of treatment has its own advantages and disadvantages. Talk to your doctor to determine the best treatment for you.