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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.
An associated skin disease favors recurrence. This may be attributed to the persistent colonization of abnormal skin with S. aureus strains, such as is the case in persons with atopic dermatitis. [16] Boils which recur under the arm, breast or in the groin area may be associated with hidradenitis suppurativa (HS). [17]
Poor surgical technique, or previous infection leading to scarring and tethering of the cyst to the surrounding tissue, may lead to rupture during excision and removal. A completely removed cyst will not recur, though if the patient has a predisposition to cyst formation, further cysts may develop in the same general area.
Ringworm. What it looks like: Ringworm is a common skin infection caused by a fungus. It gets its name from its circular rash, which is often red, swollen, and cracked. Other symptoms to note ...
[2] [3] Newly formed lipomas frequently present themselves as a bead-like lump under the skin, and become rubbery and movable. [3] They may be seen throughout the body and in some areas more than others, however, it does not make an appearance on the head or shoulders of the individual. [ 2 ]
Femoral hernias typically present as a groin lump or bulge, which may differ in size during the day, based on internal pressure variations of the intestine. This lump is typically retort shaped. The bulge or lump is typically smaller or may disappear completely in the prone position. [8] They may or may not be associated with pain.
The superior-most node is situated in the groin, deep to the inguinal ligament, and is termed the Cloquet's node (also Rosenmuller's node). [7] It can instead be considered as the inferior-most of the external iliac lymph nodes. [8] [citation needed] Cloquet's node is also considered as a potential sentinel lymph node. [7] [9]
Fungal infection within the skin or under the skin may present with a lump and skin changes. [3] Pneumonia-like symptoms or meningitis may occur with a deeper or systemic infection. [2] Fungi are everywhere, but only some cause disease. [13]