Cold weather is a likely cause of a cold nose in humans because the nose is typically unprotected in the cold outdoors, according to Ask Dr. Gott. Medical conditions such as hypothyroidism, Raynaud’s phenomenon and a vir... More » Health Women's Health Reproductive Anatomy

When a cat has a cold or an upper respiratory infection, a few actions need to be taken immediately to begin treatment. Like humans with influenza, cats need to be given plenty of fluids to avoid dehydration. Make sure t... More » Pets & Animals Pets Veterinary Health

Dogs can catch colds, although the virus that causes their cold is different than the one that infects human beings, states Pet MD. The symptoms of the cold virus that affects dogs are the same as those experienced by hu... More » Pets & Animals Pets Dogs
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A cold nose tip has many possible causes, including hypothyroidism, cold weather, the aging process, seasonal affective disorder and certain viral infections, according to Right Diagnosis. A cold nose, especially when ac... More » Science Human Anatomy

Male and female reproductive systems foster egg production and maturation, allowing humans to procreate, according to TeensHealth. Both systems produce gametes, or sex cells; the male gamete is sperm, which fertilizes th... More » Health Women's Health Reproductive Anatomy

Treatment for a blocked fallopian tube depends on the location of the obstruction and its cause. Surgery is often needed, but an inpatient procedure, tubal cannulation, is used in certain cases, according to WebMD. More » Health Women's Health Reproductive Anatomy

Excess estrogen and low levels of progesterone cause uterine lining thickening, or endometrial hyperplasia, explains Healthgrades. Estrogen causes uterine wall thickening in preparation for pregnancy, while progesterone ... More » Health Women's Health Reproductive Anatomy