These teeth don't have enough room to come in or develop properly, leading to pain, damage to other teeth and other dental problems.
Disease
Ingrown toenails
Learn about causes, prevention and treatment of this common, painful nail condition that usually affects the big toe.
Disease
Jaw tumors and cysts
Also called odontogenic tumors and cysts, these typically benign lesions develop in the jawbone or the soft tissues in the mouth. They vary in severity.
Disease
Klippel-Trenaunay syndrome
Main signs of this congenital disorder involve a red birthmark (port-wine stain), vein malformations, and overgrowth of tissues and bones.
Disease
Malignant peripheral nerve sheath tumors (MPNST)
These cancers form in the linings of nerves. Treatment includes surgery, radiation therapy and, sometimes, chemotherapy.
Disease
Mixed connective tissue disease
This condition has symptoms of several other conditions, making it hard to diagnose. There's no cure, but medicines can help.
Disease
Multiple endocrine neoplasia, type 1 (MEN 1)
Learn about this rare condition that causes tumors to grow and too many hormones to be made.
Disease
Multiple endocrine neoplasia, type 2 (MEN 2)
Learn about this rare disorder that causes tumors and overproduction of hormones.
Disease
NF2-related schwannomatosis (neurofibromatosis type 2)
NF2 is a rare condition that causes benign nerve tumors that can affect hearing, balance and other symptoms. Learn about symptoms, diagnosis and current treatments.
Disease
Nasal and paranasal tumors
Learn about these cancerous and noncancerous growths that form in and around the nose. Treatments include surgery, radiation and chemotherapy.
Disease
Nerve sheath tumors
Learn about these growths that form in or near nerves connecting to the spinal cord. Surgery is the most common treatment.
Disease
Neuroendocrine tumors
Learn about the types of tumors that make up this group of rare cancers. Find out about symptoms, causes, diagnosis and treatments.