Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «T»:
Thyroiditis, subacute: Subacute Thyroiditis is an inflammation of the thyroid
gland after a viral illness....
Thyrolingual cyst: See: Thyroglossal cyst....
Thyroplasty: A surgical technique designed to improve the voice by altering the cartilages of the larynx (the voice box), which houses the vocal folds (the vocal cords) in order to change the position or length of the vocal folds.
Thyroplasty is also known as laryngeal framework surgery....
Thyrotropin: A hormone produced by the pituitary gland at the base of the brain in response to signals from the hypothalamus gland in the brain.
The suffix -tropin indicates "an affinity for". Thyrotropin has an affinity for the thyroid. Thyrotropin is known also as thyroid stimulating ho...
Thyroxine: Abbreviated T4. A hormone made by the thyroid gland that has four iodine molecules attached to its molecular
structure. T4 and other thyroid hormones help regulate growth and control the rate of chemical reactions (metabolism) in the body....
TIA: See Transient ischemic attack....
Tibia: The larger of the two bones in the leg (the
smaller one being the fibula). The tibia is familiarly known as the
"Tibia" is a Latin word meaning both shinbone and flute. It is
thought that "tibia" refers to both the bone and the musical
instrument because flutes were once fashio...
Tibia vara: A condition characterized by
disturbance of normal growth in the inner part of the upper
tibia. Tibia vara causes a bowlegged gait, and can impair
the knees significantly. It is most common in children of
African descent. Treatment is usually by surgery, although
Tibial bowing: Improper growth of the
tibia in the leg, causing bowlegs or other leg problems.
The tibia may bow anteriorly (in the front) or posteriorly
(in the back). See also tibia vara....
Tibial muscular dystrophy
Tibial muscular dystrophy: See: Muscular dystrophy, tibial....
Tic: A repetitive movement that is difficult, if
not impossible, to control. Tics can affect any group of
muscles. The most common are facial tics, such as eye-
blinking, nose-twitching, or grimacing. Tics that affect
the muscles used to produce speech are known as vocal tics,
and can range fro...
Tic disorder: A disorder characterized by
the presence of tics. If both motor and vocal tics are
present for more than six months, the diagnosis of Tourette
syndrome may be made. Diagnosis is by observation.
Treatment is not usually recommended for minor tics that
are not bothersome to the pati...
Tic douloureux: A synonym for trigeminal neuralgia. From the French, meaning literally a painful tic. See: Trigeminal neuralgia....
Tick: A small wingless bloodsucking insect that, along with the mite, belongs to the order Acarina. Ticks may be found in tall grass, where they may attach to a passing animal or person. Pulling a tick forcefully out from under the skin may leave the head behind. Ticks can transmit diseases such as ...
Tick bite: A bite from a bloodsucking, parasitic insect that punctures the skin with a sharp beak. The tic burrows into the skin with its head. Tick bites can carry serious illness, including Rocky Mountain spotted fever, other forms of tick typhus, and Lyme disease....