Core exercises
Learning Center
Guillain-Barre syndrome
This rare autoimmune disorder affects the nerves, causing weakness and tingling in the arms and legs that rapidly spreads throughout the body.
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
Male breast cancer
Breast cancer can affect anyone. Learn about the signs and symptoms of this cancer. Treatment most often involves surgery.
Orchitis
This inflammation of one or both testicles can cause pain and infertility. It's usually caused by a bacterial infection or the mumps virus.
Testicular cancer
Learn about cancer that starts in the testicles. Treatments include surgery, chemotherapy and radiation therapy.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Varicocele
Find out how this condition involving the enlargement of veins in the scrotum can affect sperm quality and production.
Tonic-clonic (grand mal) seizure
Learn about this type of seizure that can cause convulsions. Also know how to help if you see someone having one.
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