Stomach pain after eating isn't always indigestion. It could be MALS, also called celiac artery compression. Know the warning symptoms.
Disease
Medication overuse headaches
Using medicines that ease headache pain too often can start causing headaches. Learn about prevention and treatment.
Disease
Medulloblastoma
Medulloblastoma is the most common cancerous brain tumor in children. Treatment usually includes a combination of surgery, radiation and chemotherapy.
Disease
Melanoma
Learn about the symptoms, diagnosis and treatments for the most serious form of skin cancer.
Disease
Meniere's disease
This chronic disorder affects balance and hearing, causing unpredictable episodes of dizziness and hearing problems.
Disease
Meningioma
This is the most common type of tumor that forms in the head and may affect the brain. Find out about symptoms, diagnosis and treatment.
Disease
Meningitis
Spot the signs and understand the treatment options for meningitis, an infection that has several possible causes.
Disease
Menopause
Find out about this major life change and learn how to manage hot flashes and other menopause symptoms.
Disease
Menstrual cramps
Menstrual cramps — pain in the lower abdomen just before or during menstrual periods — can range from mild to severe. Learn about treatment options.
Disease
Mental illness
A wide range of mental health conditions affect mood, thinking and behavior and can make you miserable and cause problems in daily life.
Disease
Meralgia paresthetica
Learn about this condition that causes burning, tingling and numbness in the thigh, and how to get relief.
Disease
Merkel cell carcinoma
Learn about this skin cancer that grows quickly. Find out about symptoms, diagnosis and treatments, including Mohs surgery, radiation and immunotherapy.