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H

Hallucinations

The experience of seeing, hearing or otherwise perceiving voices or images that are not there.

Heart disease

A disease resulting from a plaque buildup in vessels that supply blood to the heart.

Hematoma

An accumulation of clotted or partially clotted blood in an organ, tissue or body space, usually caused by a broken blood vessel.

Hematospermia

A benign condition in which semen is bloody.

Hematuria

A condition that can be caused by serious underlying issues in which blood is present in urine.

Hemoglobin A1c (HbA1c)

An important measure of blood sugar commonly used to diagnose prediabetes and diabetes.

High-density lipoprotein (HDL) cholesterol:

Healthy cholesterol that can help stimulate testosterone production and does not increase risk of cardiovascular disease.

High-intensity focused ultrasound

A noninvasive treatment that involves focusing ultrasound energy to heat and destroy cancerous tissue.

Hirsutism

A condition in women that results in excessive growth of dark or coarse hair in a male-like pattern on the back, chest and face.

Holmium laser enucleation of the prostate

A type of laser surgery used to treat the obstruction of the flow of urine caused by benign prostatic hyperplasia (BPH).

Human chorionic gonadotropin (HCG)

A hormone a woman’s body produces only when she is pregnant; pregnancy tests detect this hormone to determine whether a woman is pregnant.

Human papillomavirus (HPV)

The most common sexually transmitted infection in the United States; it can cause genital warts and lead to cervical cancer.

Hydrocele

A type of swelling in the scrotum resulting from the accumulation of clear fluid in the thin tissue surrounding a testicle.

Hydrocelectomy

A procedure in which a surgeon makes a small incision in the scrotum to drain a hydrocele.

Hymenoplasty

A surgical procedure in which the hymen (the thin layer of tissue at the entrance to the vagina, which is known to “break” when a woman has sex for the first time) is repaired to mimic its original, intact state.

Hyperemesis gravidarum

A rare pregnancy complication in which the mother experiences severe and persistent nausea and vomiting that may lead to hospitalization.

Hyperpigmentation

A common and typically harmless condition in which patches of skin are darker than the surrounding skin, resulting from the over-production of a pigment called melanin.

Hyperplastic polyps/inflammatory polyps

Typically benign colorectal polyps, or abnormal tissue growth on the lining of the colon or rectum.

Hypersomnia

Excessive sleepiness during the day.

Hypertension (high blood pressure)

A condition in which the force of the blood against the artery walls is too high.

Hypoglycemia

Low blood sugar, which often causes confusion, lightheadedness, shakiness, heart palpitations and anxiety.

Hypospadias

A rare congenital condition in boys in which the opening of the urethra—the tube that carries urine from the bladder and out through the penis—is located on the underside rather than on the tip of the penis.

Hysterectomy

A surgical procedure in which the uterus is removed.

Hysterosalpingography

A procedure in which an X-ray contrast liquid is injected into the uterus so abnormalities can be seen on an X-ray.