​Differential diagnosis of male infertility

​Differential diagnosis of male infertility 
-drugs such as sulfasalazine, nitrofurantoin affect the motility of the sperm 
-hernia repair damaging vas deferens or affecting blood supply to the testicle 
-absent seminal emission from sympathetic nerve injury mostly  due to retroperitoneal surgery or pelvic surgery 
-epididymitis 
-cryptochism 
-spermicidal lubricants 
-hypogonadism / deficient testosterone from primary or secondary testicular failure 
-erectile dysfunction 
-female infertility