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  2. Schamberg disease - Wikipedia

    en.wikipedia.org/wiki/Schamberg_disease

    The lesions are most frequent on the lower limbs, but may occur anywhere on the body, including the hands, arms, torso and even the neck. They may vary in number and erupt in mass numbers. They consist of irregular patches of orange or brown pigmentation with characteristic "cayenne pepper" spots appearing within and at the edge of old lesions.

  3. Chocolate Fever - Wikipedia

    en.wikipedia.org/wiki/Chocolate_Fever

    Then one day at school, Henry does not feel right. During class, he notices that he is breaking out in little brown spots, on his arms. He shows them to his teacher, Mrs. Kimmelfarber who initially dismisses them as freckles. However, the spots suddenly appear on his face as well, and Mrs. Kimmelfarber rushes Henry to Nurse Farthing, the school ...

  4. Colletotrichum acutatum - Wikipedia

    en.wikipedia.org/wiki/Colletotrichum_acutatum

    Stems are also a prominent place to see symptoms. Lesions on the stem can appear dark colored, oval shaped, and possibly have immersed spots located on petioles and runners. [4] Once C.acutatum infects these parts of the plant, it can cause other diseases to unfold such as crown root rot, defoliation, bloom blight and fruit rot. [6]

  5. Cochliobolus miyabeanus - Wikipedia

    en.wikipedia.org/wiki/Cochliobolus_miyabeanus

    Cochliobolus miyabeanus is an important plant pathogen because it causes a common and widespread rice disease that causes high level of crop yield losses. It was a major cause of the Bengal famine of 1943, where the crop yield was dropped by 40% to 90% and the death of 2 million people was recorded. [3]

  6. Urticaria pigmentosa - Wikipedia

    en.wikipedia.org/wiki/Urticaria_pigmentosa

    Red or brown spots are often seen on the skin, typically around the chest, forehead, and back. These mast cells, when irritated (e.g. by rubbing the skin, heat exposure), produce too much histamine, triggering an allergic reaction that leads to hives localized to the area of irritation, sometimes referred to as Darier's sign. Severe itching ...

  7. Café au lait spot - Wikipedia

    en.wikipedia.org/wiki/Café_au_lait_spot

    Café au lait spots, or café au lait macules, are flat, hyperpigmented birthmarks. [1] The name café au lait is French for "coffee with milk" and refers to their light-brown color. They are caused by a collection of pigment-producing melanocytes in the epidermis of the skin. [ 2 ]