Skin infections and contact with irritating substances provoke inflammation and immune responses in the skin tissues. These responses often lead to the development of itching and eruption of fluid-filled blisters, or vesicles, in the affected skin areas.

Itchy hands may be caused by a variety of skin conditions including psoriasis, poison ivy, chickenpox, winter itch, dry skin or eczema. Scratching your hands may feel satisfying, but dirt and bacteria underneath your fingernails can cause an infection on the skin.

Irritated, itchy skin in the area below the knees can range from mildly uncomfortable to downright disruptive. A persistent itch can lead to continuous scratching that may damage the skin.

Excessive sweating can be an extremely embarrassing condition. Whether it occurs at your workplace or a social function, it's something you would probably like to prevent. However, sometimes a shower and an antiperspirant stick aren't enough to combat the causes of excessive sweating.

Cold sores, often called fever blisters, usually occur on the lips or around the mouth. Caused by the herpes simplex virus, or HSV, and transmitted through skin contact with an infected person, this infection spreads easily.

When hair follicles are damaged by friction from clothing or blocked by skin cells, the result can be folliculitis, a bacterial infection. Itching, redness and the appearance of white, pus-filled bumps are symptoms of folliculitis.

Women have the hormone testosterone, just not as much as men. However, DHT hair loss in women, also called androgenic alopecia, is different than in men. As such, experts prefer to use the term female pattern baldness because it includes all the many different types of hair loss in women.

Nearly everyone has suffered from cold symptoms at one time or another. In fact, about one billion colds occur each year in the U.S., according to the University of Pennsylvania Health System. The most common symptoms of this respiratory infection are nasal congestion, sneezing, sore throat, cough and headache.

Rubbing on clothing or adjacent skin can cause the skin to become chafed. The best way to deal with chafed skin is to prevent it from occurring.

Foul body odor is an embarrassing condition that plagues some women. Although the odor tends to be harmless, it can be an indication of an underlying health condition. That's why it is important to know why the foul body odor occurs.

An often frustrating and embarrassing condition, hemorrhoids occur when veins in the anus or lower rectum become swollen and inflamed. Hemorrhoids can be either internal or external, with symptoms including itching, swelling, general discomfort, and even bleeding.

Eczema is a type of skin condition or dermatitis that affects many people in the United States. Eczema of the scalp is diagnosed as seborrheic dermatitis and presents with common signs and symptoms of redness, itchiness, flaky dandruff, irritation and scaly, dry patches.