Dark filariasis is most common in people who work outdoors and are in constant contact with such decaying matter. It may present as shallow ulcers, petechiae, brownish-black spots, or warty growths, and may be characterized by a slight itch or mild swelling or pain, or may be asymptomatic. Subcutaneous tissue-type dark filamentous mycosis often has isolated, deep in the subcutaneous or muscle abscesses or cysts, lesions can be apricot kernel size or several centimeters, or even the whole chest large plaques, may be suffering from the following diseases: 1, pneumonia Pneumonia refers to the inflammation of the terminal airways, alveoli and interstitium of the lungs. It can be caused by pathogenic microorganisms such as bacteria, viruses, fungi and parasites, as well as physical and chemical factors such as radiation and inhalation of foreign bodies. The main clinical symptoms are fever, cough, sputum, blood in sputum, which may be accompanied by chest pain or dyspnea. Young children’s pneumonia, the symptoms are often not obvious, there may be a slight cough. Bacterial pneumonia is treated with antibiotics and can be cured in 7 to 10 days. Viral pneumonia is slightly milder and antibiotic treatment is ineffective. 2, fungal toxicosis Fungi exist in large quantities in the environment, widely distributed, food, food, feed, etc. are often contaminated, some strains of which can produce mycotoxins (toxic metabolites of fungi), many kinds of toxins have toxicity, carcinogenicity, mutagenicity and teratogenic toxicity. Ingestion can cause acute or chronic mycotoxicosis (mycotoxicosis) in humans or domestic animals. 3, mycotoxicosis Mycotoxicosis is also known as North American mycotoxicosis or dermatitis mycotoxicosis. Mainly invades the lungs, skin and bones and other organs. It is caused by dermatophytes (North American). Most believe it may be a soil, wood, etc., decaying bacterium. It can also infect animals such as horses and dogs. 4, coloring fungal disease coloring fungal disease (CM) refers to the skin, subcutaneous tissue and visceral infections caused by dark spore family fungi, including dark filamentous mycosis (PHM) and coloring bacterial disease (CBM). The course of the disease is long, often due to infection after skin injury, localized pimples, nodules, ulcers or scabs, often years or decades without healing, which can cause limb disability, and severe cases can be life-threatening. 5, fungal allergies Fungal spores and mycelium enter the human body through various ways, may cause allergic reactions. Patients with specific constitution (specific reactivity) (such as asthma, allergic rhinitis, hereditary atopic dermatitis, etc.) are more likely to develop fungal allergy. Due to occupational reasons, long-term contact or frequent exposure to a large number of special allergens containing the environment of normal people, may also occur allergic reactions. 6, coloring mycosis and dark filamentous mycosis by dark-colored fungi (including bipolar mold genus, branching bottle mold genus, branching sporotrichum genus, Drehle mold genus, outside the bottle mold genus, color producing bacteria genus, bottle mold genus, branching sporotrichum genus, Ochroconis, Trichophyton mentagrophytes, linear tensile fungi genus and Wanshi fungi genus) caused by the subcutaneous tissues, sinuses, the brain and other tissues of the infection.