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Acne occurs on the face, neck, chest, back, and upper arms. It develops in sebaceous glands and hair follicles. It is common in teenagers.
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Erythroderma (Exfoliative dermatitis). Erythroderma is a skin condition that is characterized by a scaling erythematous dermatitis affecting more than 90% of the body surface. It is caused by various skin conditions such as eczema, psoriasis, drug reactions, blood disorders, and others.
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Erythema multiforme is an allergic skin reaction. It can be caused by medications, infections, or others. It appears as symmetrically distributed erythematous macules. Some of the patches appear like targets. A very severe form is called Stevens-Johnson syndrome.
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Erysipelas is a bacterial infection of the skin. It appears as a hot,painful,indurated erythema that has sharply defined borders. It predominantly affects the skin of the lower extremities or the face. The symptoms include fever and ill feeling. Some patients have recurrent attacks. Systemic antibiotic therapy is necessary to cure the erysipelas.
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Drug-induced photosensitivity (Drug eruption). Drug-induced photosensitivity is one of the skin eruptions caused by drugs. It occurs on sun-exposed parts of the body.
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Diabetic gangrene is one of the skin lesions associated with diabetes mellitus. It is caused by loss of blood supply. It usually appears on the feet, especially toes.
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Cutaneous horn (skin tumor). Cutaneous horn is a clinical diagnosis. It resembles an animal horn. It may be benign, or malignant.
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Cutaneous candidiasis is a superficial fungal infection of the skin with candida. It usually occurs in warm, moist areas. Candidiasis is particularly common in immunocompromised individuals. The diagnosis is confirmed by identifying the fungal elements of skin scrapings by microscopy. Topical antifungal creams are effective.
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Irritant dermatitis is induced by caterpillars. It appears as red papules, erythema, and/or blisters.
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Humans can be affected by cat scabies. Cat scabies appear as non-typical skin eruptions.
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Cat flea bites frequently appear on the legs as red papules, erythema, and/or blisters.
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Calcifying epithelioma is characterized by a subcutaneous hard nodule.
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The blue nevus is a variant of a mole. It is bluish-black in color. It is usually benign but sometimes mistaken for melanoma.
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Atopic dermatitis is a common chronic itchy skin disease that may be hereditary. It is common in children but can occur in adults. The patients usually have dry, easily irritated skin. The lesions often occur on the elbow bends and/or the back of the knees. The lesions are deteriorated by many things that are different for each person.
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Asteatotic eczema is a disease of elderly persons characterized by pruritic, dry, cracked skin. It commonly occurs on the legs, but it may occur on the hands and the trunk. It tends to become worse in winter.
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Anaphylactoid purpura is a small-vessel vasculitis throughout the body, especially in the skin and the kidneys. It is triggered by infections or medications. It appears as palpable purpura most pronounced on the legs. Clinical manifestations include arthralgia, abdominal pain, or nephritis. The most serious complication is renal failure.
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Acute paronychia is an infection of the skin surrounding the nail. The infection is usually caused by bacteria. The patient complains of pain and swelling around the nail.
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Squamous cell carcinoma is a cancer of the skin. It appears most frequently on sun-exposed parts of the body. The sun's ultraviolet ray exposure increases the chance of developing this cancer. A skin biopsy is required for definitive diagnosis. Surgery is the most effective treatment.
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Stasis dermatitis is a skin condition of the lower legs which is due to the chronic venous insufficiency. The lesions sometimes develop into ulcers. It is important that contact dermatitis of disinfectants worsens the ulcer.
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Strawberry mark is a capillary hemangioma of infancy.
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Thrombocytopenic purpura is a disorder of the blood in which the number of platelets is low. As a result of low platelet counts, abnormal bleeding occurs. The extreme decrease in the platelet is life threatening. It is caused by drugs, infections, pregnancy, or immune disorders.
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Tinea corporis is a common superficial fungal skin infection of the trunk and extremities. The infection sometimes comes from the infected feet. The diagnosis is confirmed by identifying the fungal elements of skin scrapings by microscopy. Topical antifungal creams are effective.
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Tinea manuum is a superficial fungal skin infection of the hand. It is often misdiagnosed as hand eczema. The diagnosis is confirmed by identifying the fungal elements of skin scrapings by microscopy. Most cases are curable with topical antifungal agents.
