Penetration Disorder: Symptoms, Causes, and Treatment
Penetration disorder involves persistent pain, fear, difficulty, or involuntary pelvic-floor tightening during attempted vaginal penetration.
Persistent Genital Arousal Disorder: Symptoms and Care
Persistent genital arousal disorder causes recurring, unwanted genital arousal sensations without corresponding sexual desire or lasting relief from orgasm.
Post-SSRI Sexual Dysfunction: Symptoms, Causes, and Care
Post-SSRI sexual dysfunction involves persistent changes in desire, genital sensation, arousal, orgasm, or ejaculation after an SSRI is stopped.
Retrograde Ejaculation: Causes, Symptoms, and Fertility
Retrograde ejaculation occurs when semen enters the bladder during orgasm instead of leaving through the penis, often causing little visible semen.
Ejaculatory Dysfunction: Types, Causes, and Treatment
Ejaculatory dysfunction includes ejaculation that is early, delayed, absent, painful, weak, or directed backward into the bladder.
Erectile Rigidity: Meaning, Causes, and Sexual Function
Erectile rigidity is the degree of firmness reached during an erection and depends on blood flow, nerve signals, erectile tissue, and blood retention.
Nocturnal Erection: Meaning, Causes, and Sexual Health
A nocturnal erection is an automatic erection during sleep, commonly associated with REM sleep and normal penile nerve and blood-flow activity.
Pudendal Nerve: Function, Pain, and Sexual Sensation
The pudendal nerve carries genital, perineal, and anal sensation while helping control pelvic-floor muscles and urinary and bowel sphincters.
Corpus Spongiosum: Anatomy, Function, and Sexual Role
The corpus spongiosum is erectile tissue surrounding the penile urethra that forms the glans and remains flexible during erection and ejaculation.
Ejaculatory Duct: Anatomy, Function, and Obstruction
The ejaculatory ducts are paired tubes that carry sperm and seminal-vesicle fluid through the prostate into the urethra during ejaculation.