Related Research Articles
Coccidioidomycosis, commonly known as cocci, Valley fever, as well as California fever, desert rheumatism, or San Joaquin Valley fever, is a mammalian fungal disease caused by Coccidioides immitis or Coccidioides posadasii. Coccidioidomycosis is endemic in certain parts of the United States in Arizona, California, Nevada, New Mexico, Texas, Utah, and northern Mexico.
A granuloma is an aggregation of macrophages that forms in response to chronic inflammation. This occurs when the immune system attempts to isolate foreign substances that it is otherwise unable to eliminate. Such substances include infectious organisms including bacteria and fungi, as well as other materials such as foreign objects, keratin, and suture fragments.
A skin condition, also known as cutaneous condition, is any medical condition that affects the integumentary system—the organ system that encloses the body and includes skin, hair, nails, and related muscle and glands. The major function of this system is as a barrier against the external environment.
Coccidioides immitis is a pathogenic fungus that resides in the soil in certain parts of the southwestern United States, northern Mexico, and a few other areas in the Western Hemisphere.
Cutaneous T cell lymphoma (CTCL) is a class of non-Hodgkin lymphoma, which is a type of cancer of the immune system. Unlike most non-Hodgkin lymphomas, CTCL is caused by a mutation of T cells. The cancerous T cells in the body initially migrate to the skin, causing various lesions to appear. These lesions change shape as the disease progresses, typically beginning as what appears to be a rash which can be very itchy and eventually forming plaques and tumors before spreading to other parts of the body.
Mycoses are infectious diseases caused by pathogenic fungi. They include fungal infections of the skin, just under the skin and ones that are more deep or widespread such as histoplasmosis and blastomycosis. They include yeast infections such as candidiasis and pityriasis versicolor, and include several other opportunistic fungal infections such as aspergillosis and mucormycosis. Several, including sporotrichosis, chromoblastomycosis and mycetoma are neglected.
The posterior cutaneous nerve of the thigh is a sensory nerve in the thigh. It supplies the skin of the posterior surface of the thigh, leg, buttock, and also the perineum.
Blue nevus is a type of melanocytic nevus. The blue colour is caused by the pigment being deeper in the skin than in ordinary nevi. In principle they are harmless but they can sometimes be mimicked by malignant lesions, i.e. some melanomas can look like a blue nevus.
Syringocystadenoma papilliferum is a benign apocrine tumor.
Primary pulmonary coccidioidomycosis is an infection caused by inhalation of Coccidioides immitis. Once pulmonary symptoms subside, about 30% of women and 15% of men will have allergic skin manifestations in the form of erythema nodosum. A coccidioidoma is a benign localized residual granulomatous lesion or scar that can remain in the lung's tissues following primary pulmonary coccidioidomycosis.
Disseminated coccidioidomycosis is a systemic infection with Coccidioides immitis, in which 15-20% of people develop skin lesions.
Paraneoplastic acrokeratosis, or Bazex syndrome is a cutaneous condition characterized by psoriasiform changes of hands, feet, ears, and nose, with involvement of the nails and periungual tissues being characteristic and indistinguishable from psoriatic nails. The condition is associated with carcinomas of the upper aerodigestive tract.
Cutaneous actinomycosis is a chronic disease that affects the deep subcutaneous tissue of the skin. Caused by an anaerobic, Gram-positive, filamentous type of bacteria in the genus Actinomyces, invasion of the soft tissue leads to the formation of abnormal channels leading to the skin surface that discharge pale yellow sulfur granules.
Cutaneous lymphoid hyperplasia refers to a groups of benign cutaneous disorders characterized by collections of lymphocytes, macrophages, and dendritic cells in the skin. Conditions included in this groups are:
CD30+ cutaneous T-cell lymphoma, also known as primary cutaneous anaplastic large cell lymphoma, is a cutaneous (skin) condition characterized by solitary or localized skin lesions that have a tendency to ulcerate.
Secondary cutaneous CD30+ large-cell lymphoma is a cutaneous condition that may arise in cases of mycosis fungoides, and in patients with lymphomatoid papulosis.
Non-mycosis fungoides CD30− cutaneous large T-cell lymphoma is a cutaneous condition that usually presents as solitary or generalized plaques, nodules, or tumors of short duration.
Primary cutaneous marginal zone lymphomas represent a heterogeneous group of diseases characterized by solitary or multiple dermal or subcutaneous nodules. Lymphomas included in this group are:
Sarcoidosis, an inflammatory disease, involves the skin in about 25% of patients. The most common lesions are erythema nodosum, plaques, maculopapular eruptions, subcutaneous nodules, and lupus pernio. Treatment is not required, since the lesions usually resolve spontaneously in two to four weeks. Although it may be disfiguring, cutaneous sarcoidosis rarely causes major problems.
References
- ↑ James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.