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Cavernosal disorders (Peyronie's disease) - Psychological causes: performance anxiety, stress, mental disorders (clinical depression, schizophrenia, substance abuse, panic disorder, generalized anxiety disorder, personality disorders or traits), psychological problems, negative feelings. 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. Erectile dysfunction, heart disease and other vascular diseases: The root cause of the narrowing of the arteries is caused by atheroma. Atheroma is like fatty patches or plaques that develop within the inside lining of arteries. (This is similar to water pipes that get furred up with scale.) Plaques of atheroma may gradually form over a number of years in one or more places in the body, commonly in arteries going to the heart, brain, legs and penis. In time, these can become bigger and cause enough narrowing of one or more of the arteries to cause symptoms and problems. online cialis pharmacy buy cialis
Blood hemoglobin A 1c: Abnormally high levels of blood hemoglobin A 1c in patients with diabetes mellitus establish that there is poor control of blood glucose levels. viagra online prescription buy viagra
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viagra online pharmacy Penile injections: The injection of drugs such as alprostadil directly into the tissues of the penis to trigger an erection was more common before the advent of new drugs such as sildenafil. The drugs relax muscles and increase blood flow to create an erection. They are also available as pellets to insert in to the urethra (the opening at the tip of the penis). Nerve or spinal cord damage: Damage to the spinal cord and nerves in the pelvis can cause erectile dysfunction. Nerve damage can be due to disease, trauma, or surgical procedures. Examples include injury to the spinal cord from automobile accidents, injury to the pelvic nerves from prostate surgery for prostate cancer (prostatectomy), radiation to the prostate, surgery for benign prostatic enlargement, multiple sclerosis (a neurological disease with the potential to cause widespread damage to nerves), and long-term diabetes mellitus. Several other medications are being studied for treating erectile dysfunction; these include IC351 (another PDE5 inhibitor), sublingual apomorphine, and the combination of yohimbine and L-arginine. Scientists also are researching gene therapy to treat erectile dysfunction.