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Erythema nodosum (EN) is an inflammatory condition characterized by inflammation of subcutaneous fat tissue, resulting in painful red/blue lumps or nodules that are usually seen symmetrically on both shins, on the thighs, arms, and elsewhere. [1] It can be caused by a variety of conditions but 20 to 50% of cases are idiopathic.
Nodular vasculitis is a skin condition characterized by small, tender, reddened nodules on the legs, mostly on the calves and shins. Microscopically there are epithelioid granulomas and vasculitis in the subcutaneous tissue, making it a form of panniculitis.
When weather is cold, ankle is cold, blue and often tender. In hot weather, ankle becomes hot, edematous, swollen and painful. Chilblains may be present. On palpation, small superficial and painful nodules are felt. They break down to form small and multiple ulcers. Fresh crops of nodules appear in periphery of ulcer and ultimately break down.
Angiolipomas are painful subcutaneous nodules having all other features of a typical lipoma. [7]: 624 [9] Cerebellar pontine angle and internal auditory canal lipomas [10] Chondroid lipomas are deep-seated, firm, yellow tumors that characteristically occur on the legs of women. [7]: 625
Angiolipoma is a subcutaneous nodule with vascular structure, having all other features of a typical lipoma. They are commonly painful. [1]: 624 [2] Angiolipomas manifest as multiple painful subcutaneous nodules commonly on the upper limbs. The can occur sporadically, with a family history or after trauma.
The most common lesions are erythema nodosum, plaques, maculopapular eruptions, subcutaneous nodules, and lupus pernio. Treatment is not required, since the lesions usually resolve spontaneously in two to four weeks. Although it may be disfiguring, cutaneous sarcoidosis rarely causes major problems. [1]
An ulcer is a sore on the skin or a mucous membrane, accompanied by the disintegration of tissue. Ulcers can result in complete loss of the epidermis and often portions of the dermis and even subcutaneous fat. Ulcers are most common on the skin of the lower extremities and in the gastrointestinal tract. An ulcer that appears on the skin is ...
Angioleiomyomas present as solitary, small, slow-growing, firm, movable, subcutaneous nodules that typically measure less than 2 cm in size. Pain is the most obvious symptom of angioleiomyomas. Wind and cold exposure can set off paroxysmal episodes of pain.