Congenital triangular alopecia Brauer nevus temporally limited alopecia

beginning at 3 to 5 years of age.

Congo red test. An intravenous test used to diagnose generalized amyloidosis. red.

Very rare permanent triangular patches on one or both frontotemporal scalp regions An intradermal skin test using Congo red solution will stain localized amyloid nodules

Corn. A corn or clavus is a small, sharply circumscribed, often painful hyperkeratotic lesion that may be either hard with a central horny core or soft, as commonly seen between the toes. Underlying bone protuberances are causative (can be very painful).

Cowden's disease. 319. Autosomal dominant disease associated with multiple trichilemmomas of the face and multiple papules of the oral mucosa, causing a cobblestone appearance, as well as visceral malignancies, especially cancer of the breast in females.

Crabs. See Pediculosis

Crohn's disease. 258. A granulomatous disease of the bowel. Cutaneous manifestations include pyoderma gangrenosum, exfoliative dermatitis, erythema multiforme and Stevens-Johnson syndrome, urticaria, herpes zoster, palmar erythema, cutaneous Crohn's disease, and necrotizing vasculitis.

Crouzon's disease. Autosomal dominant (but often spontaneous) craniofacial dystrophy with exophthalmos, craniosynostosis, maxillary hypoplasia, orbitostenosis, hooked nose, and acanthosis nigricans.

Cryoglobulinemia. Purpura, livedo reticularis, and ulcers, especially on lower extremities caused by a complex of proteins that precipitate on cooling in vitro. It can be primary or associated with underlying cancer, collagen vascular diseases, infection, and thromboembolic disease. Hepatitis C may be associated and interferon alpha may be therapeutic.

Cryptococcosis (torulosis). A worldwide disease caused by a yeast-like fungus. Cryptococcus neoformans. It characteristically invades the central nervous system via the respiratory tract. Variable skin lesions are uncommon.

Cutis marmorata. See Livedo reticularis

Cutis verticis gyrata. A rare abnormality of the posterior scalp in which the skin is thrown into waves and folds resembling the cerebral convolutions of the brain.

Cyclic neutropenia. A form of agranulocytosis characterized by a periodic decrease in neutrophilic leukocytes. Skin lesions include severe ulcerative gingivitis and stomatitis.

Cysts, 328-329, 328f, 329f, 378f acne, 124 dermoid, 329 epidermal, 328, 328f hair. This granulomatous reaction to buried hair occurs in the hands of barbers.

mucous, 329, 329f ovarian, 269

pilar, 328, 328f sebaceous, 328, 328f synovial, 329, 329f treatment of, 329

trichilemmal, 328, 328f

Cytomegalic inclusion disease. The causative DNA virus, cytomegalovirus, is similar to the herpes simplex virus. The disease in infants is characterized by hepatosplenomegaly, jaundice, hemorrhages into the skin, and convulsions. Many organs are infected. It is usually fatal. In adults the virus is associated with malignant diseases, leukemia, AIDS, and other immunosuppressive conditions.

Degos' disease. See Papulosis, malignant atrophying

Demodex mites. 123. Demodex folliculorum and D. brevis are ubiquitous hair follicle mites. They may play a role in blepharitis, rosacea, folliculitis, and perioral dermatitis.

Dercum's disease. See Adiposis dolorosa

Hair Loss Prevention

Hair Loss Prevention

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