Find out more about this bone marrow cancer. Learn about symptoms, diagnosis and treatments for primary myelofibrosis and secondary myelofibrosis.
Disease
Myocardial ischemia
Myocardial ischemia reduces blood flow to the heart and may cause chest pain — but not always. Learn all the signs and symptoms and how to treat it.
Disease
Myocarditis
Learn about the diagnosis and treatment of this inflammation of the heart muscle that can reduce the heart's ability to pump blood.
Disease
Myoclonus
These uncontrollable jerking motions, which include normal hiccups and "sleep starts," can be disabling when caused by an underlying health condition.
Disease
Myofascial pain syndrome
In this condition, pressure on certain points in the muscles, called trigger points, can cause ongoing muscle pain.
Disease
Myxofibrosarcoma
Learn about this connective tissue cancer that often starts in the arms and legs. Myxofibrosarcoma treatments include surgery, radiation therapy and chemotherapy.
Disease
Sclerosing mesenteritis
Sclerosing mesenteritis is a rare condition that may lead to blockage in the small intestine. Learn about treatment at Mayo Clinic.
Disease
Scrotal masses
Lumps in the scrotum have various causes. Even painless lumps should be checked promptly by a health care professional.
Disease
Spinal arteriovenous malformation (AVM)
Learn about how this rare blood vessel condition can affect the spinal cord.
Disease
Stage 4 (metastatic) colon cancer
Find out about symptoms and complications for this advanced stage of colon cancer. Learn about treatment options, including chemotherapy, surgery and targeted medicines.
Disease
Stretch marks
Find out the symptoms of and treatment for this painless condition that causes streaks on the abdomen, breasts, hips, buttocks and thighs.
Disease
Systemic mastocytosis
Excess mast cells can build up in skin, bone and organs. When triggered, the cells release substances that can cause allergic reactions and organ damage.