Health Topics A-Z

Kidney cancer can develop in adults and children. The main types of kidney cancer are renal cell cancer, transitional cell cancer, and Wilms tumor.

Kidney stones are hard pieces of mineral deposits that form in the kidneys. They can cause severe pain and possible health complications if left untreated. 

Leishmaniasis is a parasitic disease transmitted by the bites of infected sand flies, found across dozens of countries worldwide and is classified as a neglected tropical disease.

Lung cancer includes two main types: non-small cell lung cancer and small cell lung cancer. Smoking causes most lung cancers, but nonsmokers can also develop lung cancer.

Lymphoma is a broad term for cancer that begins in cells of the lymph system. The two main types are Hodgkin lymphoma and non-Hodgkin lymphoma (NHL). Hodgkin lymphoma can often be cured. The prognosis of NHL depends on the specific type.

Malaria is a serious mosquito-borne infectious disease caused by the bite of female Anopheles mosquitoes. Untreated malaria can progress rapidly to severe disease and death.

Meningitis and encephalitis are serious health conditions that cause swelling and irritation in and around the brain. Most but not all are caused by viral infections.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is a liver condition in which too much fat builds up in the liver, but not due to alcohol use.

Migraine is a condition that is more than just a bad headache. Symptoms of migraine differ from person to person but often include recurring headaches, nausea, vomiting, mood changes, extreme tiredness, and sensitivity to light, noise, and smells.

Multiple sclerosis (MS) is a chronic neurological disorder affecting the brain, spinal cord, and optic nerve (the nerve connecting the eye to the brain). It is one of the most common disabling neurological diseases affecting young adults.