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Targetoid hemosiderotic hemangioma, also known as a hobnail hemangioma is a skin condition characterized by a central brown or purplish papule that is surrounded by an ecchymotic halo. [1] [2] It may appear similar to melanoma. It was first described by Santa Cruz and Aronberg in 1988. [2]
The central punctum of the papule frequently develops into a vesiculopustular structure, experiences hemorrhagic necrosis, ulcerates, and is covered in reddish-brown crusts. There may be postinflammatory hyper- and hypopigmentation as well as varioliform scars.
Acne necrotica presents with a primary lesion that is a pruritic or painful erythematous follicular-based papule that develops central necrosis and crusting and heals with a varioliform scar. [ 1 ] : 650 [ 2 ] : 761
Intravenous immunoglobulin may also improve outcomes. [1] Most people improve with treatment and in some, the condition resolves completely. [1] About one in 100,000 people receive a new diagnosis of dermatomyositis each year. [2] The condition usually occurs in those in their 40s and 50s with women being affected more often than men. [2]
Fibrous papules are also termed facial angiofibromas and were formerly and incorrectly termed adenoma sebaceum (fibrous papules are unrelated to sebaceous glands [4]). They develop in up to 8% of the general adult population and occur as 1 to 3 [ 5 ] pink to red, [ 4 ] dome-shaped papules in the central areas of the face, nose, and/or lips. [ 6 ]
Papule and plaque. A papule is a small, well-defined bump in the skin. [2] It is smaller than a nodule; it can be as tiny as a pinhead and is typically less than 1 cm in width, according to some sources, [2] [3] and 0.5 cm according to others. [4]
Discrete papular lichen myxedematosus is typically identified by the presence of violaceous, flesh-colored, or reddish, waxy papules that range in size from 2 to 5 mm and that symmetrically affect the trunk and limbs. [3]
The lacrimal caruncle is found at the medial canthus of the eye. [1] It consists of skin, hair follicles, sebaceous glands, sweat glands, accessory lacrimal tissue and other tissues that are present in the skin and accessory lacrimal glands. [1] [2] Its non-keratinized epithelium resembles the conjunctival epithelium. [2]