underactive


Also found in: Dictionary, Thesaurus, Acronyms.
Related to underactive: underactive bladder, Underactive thyroid

underactive

(ŭn′dər-ăk′tĭv)
adj.
Characterized by insufficient or abnormally low activity: an underactive area of the brain.

un′der·ac·tiv′i·ty (-ĭ-tē) n.

underactive

Functioning at less than full efficiency or productivity; said, for example, of glands such as the thyroid or the adrenals.
References in periodicals archive ?
Medications also can affect thyroid function--for example, amiodarone (Corderone[R], Pacerone[R]), which treats heart arrhythmias, can induce both an overactive and underactive thyroid.
If an underactive thyroid is mismanaged or left untreated, it can lead to goitre, heart disease and other life-threatening conditions.
Or perhaps there really are a lot of athletes unknowingly suffering from underactive glands, and the medical literature merely needs to catch up with reality.
Much more common is an underactive thyroid, called hypothyroidism.
The standard treatment for an underactive thyroid is the synthetic thyroid hormone levothyroxine (Levothroid, Synthroid).
CLOSE PALS Joanna with her Gavin and Stacey co-stars MEDICAL REGIME: Gavin and Stacey's Joanna Page takes medication to control an underactive thyroid
Skinner has done another study in which the patients with normal blood tests who had symptoms of an underactive thyroid-those whom most physicians would likely say had a normal thyroid hormone.
An underactive thyroid gland (hypothyroidism) is actually quite common, affecting about 18% of Americans.
In addition, general medical research has shown that an underactive or overactive thyroid gland can also lead to depression (Silberg et al.
Fifty-nine chapters are grouped into sections discussing thyroid functions and other basic information, thyroid disorder symptoms and risk factors, thyroid tests, underactive thyroid gland disorders, overactive thyroid gland disorders, parathyroid gland disorders, thyroid and parathyroid cancer, thyroid and parathyroid disorder treatments, and thyroid disorder effects on other body systems.
For each cancer, the team targeted four genes that become either overactive or underactive in people with the disease.
These factors may include illness (such as an underactive thyroid), stressful life events, a decrease in exposure to sunlight, fluctuating hormones (associated with oral contraceptives or premenstrual syndrome), substance abuse, and burnout.