The integumentary system refers to the skin of the human body. Sometimes, the body's own cells attack the body and lead to red patches. In other instances, a virus can wreak havoc on the skin and leave unsightly bumps. In yet other cases, an allergic reaction can occur on the skin.
Psoriasis
Psoriasis refers to a chronic skin problem that typically affects such areas as the knees and lower back. The University of Maryland Medical Center notes that various forms of psoriasis exist, the most common being plaque psoriasis. Specific symptoms include red patches that grow in size and that sometimes assume a ring-like appearance. The exact cause for psoriasis is unknown but some of its risk factors include being under 20 years of age, having a family history of psoriasis, being male and being of indigenous South or North American heritage. Treatment for psoriasis involves using topical and oral medications, as well as light therapy.
Common Warts
Common warts refer to growths that typically occur on the hands and fingers as a result of the human papillomavirus. Warts can also grow on the genitals, legs and soles of the feet. Some risk factors for developing common warts include being a child or young adult and having a weakened immune system. Treating common warts includes freezing the wart, surgically removing it, or using medications.
Dermatitis
Dermatitis refers to a medical condition in which the skin is inflamed. Many forms of dermatitis exist. MayoClinic.com indicates that contact dermatitis occurs when the skin encounters such irritants as poison ivy. Neurodermatitis refers to a chronic itchiness of the skin. Atopic dermatitis refers to a short-lived rash. Perioral dermatitis refers to a rash around the mouth. Typical signs of dermatitis include swelling, itching, redness and skin lesions. Treating dermatitis involves using topical and oral medications.
