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They usually occur just under the skin, but occasionally may be deeper. [1] Most are less than 5 cm (2.0 in) in size. [2] Common locations include upper back, shoulders, and abdomen. [4] It is possible to have several lipomas. [3] The cause is generally unclear. [1] Risk factors include family history, obesity, and lack of exercise.
Dermatofibromas [4] are hard solitary slow-growing papules (rounded bumps) that appear in a variety of colours, usually brownish to tan. They are often elevated or pedunculated . A dermatofibroma is associated with the dimple sign ; by applying lateral pressure, there is a central depression of the dermatofibroma.
The left side of the image is showing the temperature increase caused by an insect bite after about 28 hours. Most arthropod bites and stings cause self-limited redness, itchiness and/or pain around the site. Less commonly (around 10% of Hymenoptera sting reactions), a large local reaction occurs when the area of swelling is greater than 10
Scar tissue can feel like hard, flat lumps directly under the skin. Painful arousals. Pain occurs in about 20 to 70 percent of men with Peyronie’s disease during the acute phase.
At the site of a bite by an adult female Ixodes holocyclus one can expect there to be local numbness and an itchy lump which lasts for several weeks. Although most cases of tick bite are uneventful in humans, some can produce life-threatening effects including severe allergic reactions , [ 31 ] tick-transmitted infectious diseases such as ...
Mycobacterium tuberculosis is the most common cause of both pulmonary tuberculosis and tuberculous lymphadenitis. [1] [6] Historically, transmission of Mycobacterium bovis from dairy consumption was another frequent cause of tuberculous lymphadenitis, but incidence has drastically decreased in developed countries since the advent of pasteurization and other efforts to prevent bovine ...
The bump had grown. It felt angry and hot to the touch, but I didn’t panic. I’m just having an allergic reaction to the bug bite, I thought. My shoulder was throbbing and swollen but I willed ...
After months or years these lumps can become painful and swollen and then resolve. [3] [2] A specific form called neurocysticercosis, which affects the brain, can cause neurological symptoms. [2] In developing countries this is one of the most common causes of seizures. [2] Cysticercosis is usually acquired by eating food or drinking water ...