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Halcinonide - high potency corticosteroid. Also sold under the brand name(s): Halog®, Halog®E.

Halog® - by Westwood Scribb, (Halcinonide) a high potency corticosteroid. Also sold under the brand name(s): Halog® E

Helicobacter pylori - A stomach bacteria which causes ulcers that was once thought to be the cause of rosacea. Later studies did not prove this connection.

Hydrocortisone – a natural chemical made by the body which reduces swelling, itching, inflammation and burning. The most common prescribed and/or over the counter steroid. Very low potency steroid. Also sold under the brand name(s): Cetacort®, Nutracort®, Anusol-HC®, Hytone®, Cort-Dome®, Locoid®, Cortenema®, Cortifoam®, Cortaind®, Lanacort®, Westcort®

Hypertrophy - Abnormal growth.

Hyperemia - Abnormally increased blood flow

Hyperplasia - Increased cell production in normal tissue; an excess of normal tissue

Hypothalamus - The body's "thermostat"

Hytone® - by Dermik, (Hydrocortisone) a low potency steroid. Also sold under the brand name(s): Cetacort®, Nutracort®, Anusol-HC®, Hytone®, Cort-Dome®, Cortenema®, Cortifoam®, Cortaind®, Lanacort®, Locoid®, Westcort®