Editing Erectile dysfunction (section)

===Other workup methods===
;Penile nerves function:Tests such as the [[bulbocavernosus reflex]] test are used to ascertain whether there is enough nerve sensation in the penis. The physician squeezes the glans (head) of the penis, which immediately causes the anus to contract if nerve function is normal. A physician measures the latency between squeeze and contraction by observing the anal sphincter or by feeling it with a gloved finger in the anus.<ref>{{cite journal | vauthors = Vodušek DB, Deletis V | title = Intraoperative Neurophysiological Monitoring of the Sacral Nervous System | journal = Neurophysiology in Neurosurgery, A Modern Intraoperative Approach | pages = 153–165 | date = January 2002 | doi = 10.1016/B978-012209036-3/50011-1 | isbn = 978-0-12-209036-3 | s2cid = 78605592 }}</ref>

;Nocturnal penile tumescence (NPT):It is normal for a man to have five to six erections during sleep, especially during [[Rapid eye movement sleep|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{{how many|date=December 2022}} of males who have no sexual dysfunction nonetheless do not have regular nocturnal erections.{{citation needed|date=March 2021}}

;Penile biothesiometry:This test uses electromagnetic vibration to [[Biothesiometry|evaluate sensitivity]] and nerve function in the glans and shaft of the penis.<ref>{{Citation |last1=Mulhall |first1=John P. |title=Biothesiometry |date=2017 |url=http://link.springer.com/10.1007/978-3-319-42178-0_2 |work=Atlas of Office Based Andrology Procedures |pages=9–14 |editor-last=Mulhall |editor-first=John P. |place=Cham |publisher=Springer International Publishing |language=en |doi=10.1007/978-3-319-42178-0_2 |isbn=978-3-319-42176-6 |access-date=2022-02-27 |last2=Jenkins |first2=Lawrence C. |editor2-last=Jenkins |editor2-first=Lawrence C.|url-access=subscription }}</ref>

;Dynamic infusion cavernosometry (DICC):Technique in which fluid is pumped into the penis at a known rate and pressure. It gives a measurement of the vascular pressure in the corpus cavernosum during an erection.{{citation needed|date=December 2020}}

;Corpus cavernosometry:[[#Corpus Cavernosometry|Cavernosography]] measurement of the vascular pressure in the corpus cavernosum.  Saline is infused under pressure into the corpus cavernosum with a butterfly needle, and the flow rate needed to maintain an erection indicates the degree of venous leakage. The leaking veins responsible may be visualized by infusing a mixture of saline and x-ray contrast medium and performing a cavernosogram.<ref>{{cite journal |vauthors=Dawson C, Whitfield H | title = ABC of urology. Subfertility and male sexual dysfunction | journal = BMJ | volume = 312 | issue = 7035 | pages = 902–05 | date = April 1996 | pmid = 8611887 | pmc = 2350600 | doi = 10.1136/bmj.312.7035.902 }}</ref> In Digital Subtraction Angiography (DSA), the images are acquired digitally.{{citation needed|date=December 2020}}

;Magnetic resonance angiography (MRA): This is similar to [[magnetic resonance imaging]]. Magnetic resonance angiography uses magnetic fields and radio waves to provide detailed images of the blood vessels. The doctor may inject into the patient's bloodstream a [[contrast agent]], which causes vascular tissues to stand out against other tissues, so that information about blood supply and vascular anomalies is easier to gather.{{citation needed|date=December 2020}}

;Erection Hardness Score
{{excerpt|Erection Hardness Score}}