Thyroiditis is when your thyroid gland becomes irritated. Hashimoto’s thyroiditis is the most common type of this health problem. It is an autoimmune disease. It occurs when your body makes antibodies that attack the cells in your thyroid. The thyroid then can’t make enough of the thyroid hormone.

Detailed information on pityriasis rosea, including causes, symptoms, diagnosis, and treatment.

Detailed information on the most common types of skin pigment disorders, including albinism, melasma, vitiligo, and skin pigment loss following sun damage.

Diabetes insipidus occurs when your body doesn’t make enough antidiuretic hormone (ADH). Learn more about this rare disease that causes you to urinate often.

Detailed information on the most common parasitic infections of the skin, including creeping eruption, lice, and scabies

This chart shows some common bacterial skin infections and their treatment.

Tinnitus is the sound of ringing in the ears. It may also be described as roaring, buzzing, hissing, or clicking inside the head. The sounds may come and go. Or they may be ongoing. Read on to learn more.

Detailed information on speech and voice disorders, including spasmodic dysphonia and stuttering

Spasmodic dysphonia is a voice disorder. It causes involuntary spasms in the muscles of the voice box or larynx. This causes the voice to break and have a tight, strained, or strangled sound. Read on to learn more, including causes, symptoms, and treatment.

Detailed information on hair problems, including baldness (alopecia), excessive hairiness (hirsutism), and ingrown hairs