Glossary "T"

TACHYPHYLAXIS (TACK ee fih LAK sis):
The diminished response that sometimes follows long-term therapy with the same medication.

TELANGIECTASIA (tell an jek taze yah):
Enlarged visible superficial blood vessels.

TELOGEN (TEL oh jen):
Resting phase of hair growth cycle.

TERATOGEN (TER ah TOH jen):
Substance that causes birth defects. Isotretinoin, the oral retinoid for acne, is a teratogen.

TERATOGENIC (TER ah TOH jen ik):
Causing birth defects. Isotretinoin is teratogenic.

TERMINAL:
One of two types of hair shaft. The terminal hair shaft is thick, long and dark. The scalp, eyebrows, axillae and pubic regions are covered with terminal hairs.

TETRACYCLINE (TET rah SIGH kleen):
First of the broad spectrum antibiotics. Used in oral and topical forms as an acne treatment.

THERMOCOUPLE:
Monitoring device used during dryosurgery that allows the physician to measure skin temperature and evaluate the extent and depth of skin freezing.

TINEA CAPITIS:
Fungus infection (ringworm) of the scalp.

TINEA INCOGNITO (TIN ee uh in KOG nee toh):
Rash which results if ringworm is misdiagnosed and treated with topical corticosteroids.

TOPICAL:
Dermatologic drug applied to the skin surface.

TRANSEPIDERMAL WATER LOSS:
The migration of moisture upward from deeper dermal tissues. Lost to evaporation after passing through the stratum corneum. One of the sources of moisture for the stratum corneum.

TRETINOIN (TRET ih no in):
All-trans-retinoic acid. Used as a topical treatment for the prevention and treatment of acne.

TRIGLYCERIDE (TRI GLISS er ide):
Naturally occurring ester of fatty acids and glycerol; chief component of fats and oils.

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