|
|
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
![Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th](https://biology-forums.com/gallery/47/medium_27605_22_04_12_6_11_48.jpeg)
![Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_28_47_10077486.jpeg)