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ASPERMATISM (aspermatismus; grech, and - otritsa. + sperma, spermatos a seed) — lack of an ejaculation at the sexual intercourse. At And. sexual desire and an erection can be not broken.

Distinguish true and false And. At true And. formation of sperm from components, and also its ejection in a gleam of an urethra is broken. At false And. semen is thrown out a gleam of an urethra, but through its outside opening does not stream. It remains in it as it happens at patholologically high viscosity of components of an ejaculate and at strictures of an urethra, or is thrown in a gleam of a bladder; the last can be a consequence of cicatricial deviation of an urethra or neurogenic atony of an internal sphincter of a bladder. At false And. the feeling of an orgasm can be kept. True And. always is followed by full loss of feeling of an orgasm. False And. sometimes call mechanical, true — psychological.

Depending on the reasons And. can be temporary and constant. Distinguish three forms of a true aspermatism.

1. Cortical And. The increased braking influence of a cerebral cortex on an eyakulyatorny reflex is the cornerstone of a disease patholologically. Fear of undesirable pregnancy, negative emotions during sexual intercourse can be the reasons of such braking, constant vigilance at it is long the practiced interrupted sexual intercourse. As during sleep active cortical braking is removed, at these patients the nocturnal emissions which are followed by feeling of an orgasm remain.

2. Spinal And. arises at defeat of the spinal center of an ejaculation located in upper lumbar segments of a spinal cord. The spinal center can be surprised at inborn defects of a backbone and spinal cord (various dysgeneses and agenesias), an injury in the field of the lower chest — upper lumbar segments of a spinal cord, tumors, hemorrhages, organic diseases of a spinal cord in this department. Functional exhaustion of the spinal center can be caused is long the practiced onanism interrupted or the prolonged sexual intercourse. Sharp decrease in excitability of the spinal center develops, at strong intoxication, hron, an alcoholic poisoning and other intoxications. Mechanism spinal And. it is based on lack of short circuit of an eyakulyatorny reflex in the spinal center of an ejaculation and as a result of it lack of an ejaculation and orgasm. Nocturnal emissions and an orgasm at a spinal form A. also it is not observed.

3. Neuroreceptor And. develops as a result of falloff or total loss of sensitivity of nerve terminations in a peripheral zone of an eyakulyatorny reflex, i.e. in a head and a body of a penis, an urethra. It is observed at cicatricial deformations, polyneurites, various organic diseases and an injury of a spinal cord with the isolated disturbance of sensitivity. Nocturnal emissions and an orgasm can be kept.

At all forms A. — main complaint of patients to lack of an ejaculation and orgasm. At long disease indifference to the sexual intercourses and as a result of it decrease in sexual desire and weakening of an erection can develop. And. sometimes is the reason of infertility at men (see. Infertility ).

Diagnosis And. does not raise doubts in the absence of sperm in condom after the sexual intercourse and elements of sperm in the urine received for a research right after the sexual intercourse.

Treatment cortical And. — the suggestion, hypnosis, all-tonic therapy, means increasing excitability of a cerebral cortex. At spinal And. — a diathermy and faradisation on area of lumbar segments of a spinal cord, rectal or sacrolumbar electrostimulation, polyvitamins, prozerin, drugs of phosphorus and calcium. At neuroreceptor And. — treatment of the basic diseases which caused disturbances of peripheral reception. Sexual abstinence is useful at all forms A., since it considerably lowers a threshold of an eyakulyatorny reflex and increases a possibility of an ejaculation. Mechanical forms A. demand treatment of a basic disease and elimination of the reasons detaining semen in an urethra or sending it to a bladder.

Bibliography: Kagan S.A. Pathology of a spermatogenesis, L., 1969; it, Sterility at men, L., 1974, bibliogr.; M about l of N and r E. The general spermatology, the lane with it., Budapest, 1969; Porudo-minsky I. M. Sexual frustration at men, page 227, M., 1960; it, Infertility at men, page 129, L., 1964; Rozovsky I. S. Diagnosis of infertility, M., 1961; Toshev G. and Ananiyev of T. I. Besplodiyeto at a mzh, Sofia, 1962; Vasterling H. W. Praktische Spermatologie, Stuttgart, 1960, Bibliogr.

H. B. Savchenko.