Too many mast cells can build up in skin, bone and organs. When triggered, the cells let out chemicals that can cause allergic reactions and organ damage.
Disease
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.
Disease
Torn meniscus
Any activity that causes you to twist or rotate your knee, especially when putting your full weight on it, can cause this common knee injury.
Disease
Transverse myelitis
This neurological disorder occurs when a section of the spinal cord is inflamed, causing pain, weakness, sensory problems and dysfunction in the body.
Disease
Waldenstrom macroglobulinemia
Learn about this rare type of white blood cell cancer. Treatments include chemotherapy, targeted therapy, immunotherapy and bone marrow transplant.
Disease
Wet macular degeneration
Blurred vision or blind spots could be a sign of this eye disorder. Recognizing the warning signs could save your vision.