Angioedema is a skin condition very similar to hives. In hives, raised, red, itchy, irregular bumps appear on the skin; in angioedema, the same thing happens beneath the skin. Instead of being itchy, angioedema is tender or painful. This video offers additional details about this condition and how it develops.

Atopic dermatitis is a skin inflammation caused by sensitivity to something in the environment. It often runs in families and may occur along with hay fever, asthma, or nasal allergies. This video explores the possible triggers for the condition and who is at risk.

Contact dermatitis is a common skin rash that may be dry, red, and blistered. It is caused by skin contact with material that either irritates the skin or causes skin allergies. This video examines the possible causes of contact dermatitis and the treatments available, including avoiding contact with the problem materials.

Hand, foot, and mouth disease is a contagious viral infection that starts in the throat. It affects children up to age 3 and usually resolves in four to five days without treatment. This video examines how this illness spreads and describes the typical symptoms.

Herpes simplex is a virus in the family of viruses that cause chickenpox, shingles, and mononucleosis. One type of the herpes virus causes cold sores around the mouth; another type causes genital herpes. This video looks at the types of herpes simplex and what you can do to prevent their spread.

Herpes zoster, also known as shingles, is an uncomfortable and often very painful outbreak of skin blisters and sores. The condition is caused by the varicella-zoster virus, the same virus that causes chickenpox. This video explains how shingles develop, what treatment is available, and preventive steps to take, including vaccination.

Impetigo is a mild skin infection seen most frequently in children. It is caused by skin bacteria, usually staph (staphylococci) or strep (streptococci). This video takes a closer look at this contagious disease.

Lyme disease is an illness spread by the bite of an infected tick. A bull's-eye rash is a typical symptom that identifies this illness, which untreated can affect many parts of the body. This video explains how the illness develops and what you can do to protect yourself against tick bites.

Skin cancer is the most common cancer in the US. Melanoma is the least common, but the most deadly of the three skin cancer types. In this video, you'll learn who's at risk for melanoma, what to look for to help detect this cancer, and what you can do to prevent it.

Pityriasis rosea is a skin condition seen most frequently in children and young adults. It may be caused by a virus, but it is not considered to be contagious. The video explains the symptoms and recommended treatment.

All warts are caused by the human papillomavirus. In the case of plantar warts, the virus infects the bottom of the feet. Walking or even standing can become painful because of the pressure of the wart on the foot. This video discusses what to do if you develop a plantar wart.

Wheelchair cushions are designed to prevent pressure sores, as well as to maintain pelvic and spinal alignment, and a stable posture. These cushions redistribute the pressure away from at-risk areas. This video explains how to choose a cushion that meets your specific needs.

If you use a wheelchair, it's important to take steps to prevent pressure sores. When you sit, blood flow is restricted because skin tissue is pressed between bone and a firm surface, and a pressure sore may develop. This video discusses preventive measures and symptoms to watch for.

A pressure ulcer is a sore that results from the death of the skin and its underlying tissue in areas of the body that receive pressure. This occurs when a patient sits or lies still for long periods. This video describes how pressure ulcers develop, what treatment is available, and how they can be prevented.

Ringworm is a general term used to describe a very common type of skin infection. It is not caused by a worm at all, but by a fungus. In this video, you'll learn more about the fungus that causes ringworm and what steps you can take to prevent the infection.

Rosacea is a skin disease that affects people 30 to 60 years old. The cause is unknown, but it is in part hereditary. Alcohol, hot beverages, and certain foods can worsen the disease. This video explains how rosacea is diagnosed and how medication can manage symptoms.

Scabies is an extremely itchy rash caused by a tiny mite that burrows into the skin. The mite spreads easily from person to person and is common in young children. This video offers more details about the rash and what steps you can take to protect yourself and your family.

Tinea pedis, commonly called athlete's foot, is a foot infection caused by a fungus. Tinea pedis is most frequently seen in adolescents and adults during the warm months, but can occur at any time. This video discusses how athlete's foot develops, typical symptoms, and recommended treatment.

Tinea unguium is a fungal infection of the nails, particularly the toenails. Tinea of the toenail occurs most often in people who have frequent bouts of athlete's foot. This video discusses typical symptoms and the difficulty in eliminating the fungus once it takes hold.

Tinea versicolor is a skin disorder caused by a type of yeast normally found on the skin. It is more common during hot, humid weather, when the yeast can overgrow. Watch this video to learn how this condition is diagnosed and treated.