- anthracosis [DOID:10327]
A pneumoconiosis that is characterized by deposition of carbon or coal dust in the lung parenchyma leading to the formation of black nodules and emphysema.
- human monocytic ehrlichiosis [DOID:0050026]
An ehrlichiosis that results in infection located in monocyte or located in macrophage, has_material_basis_in Ehrlichia chaffeensis, which is transmitted by black-legged tick (Ixodes scapularis), transmitted by western black-legged tick (Ixodes pacificus) or transmitted by castor bean tick (Ixodes ricinus). The infection has symptom headache, has symptom muscle aches, has symptom fatigue, has symptom fever and has symptom rash.
- ABCD syndrome [DOID:0050600]
A syndrome that is characterized by albinism, black lock, cell migration disorder of the neurocytes of the gut and sensorineural deafness and has_material_basis_in a mutation in the endothelin B receptor gene (EDNRB).
- skin angiosarcoma [DOID:4517]
An angiosarcoma and hemangioma of skin and malignant skin vascular tumor and sarcoma of skin that is located_in the skin and results_in an enlarged bruise (a blue-black nodule) and an unhealed ulceration.
- cutaneous anthrax [DOID:7426]
An anthrax disease that results_in infection located_in skin, has_material_basis_in Bacillus anthracis, which is transmitted_by contact with infected animals or animal products. The infection has_symptom skin lesion that eventually forms an ulcer with a black center.
- black piedra [DOID:12711]
A superficial mycosis that is a superficial fungal infection of the hair shaft caused by Piedraia hortae, an ascomycetous fungus forming hard black nodules on the shafts of the scalp, beard, moustache and pubic hair.