From: Urticaria and angioedema
Urticarial vasculitis | • Lesions are usually painful (rather than pruritic), last >48 hours, and leave discoloration on the skin |
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Systemic mastocytosis | • Rare condition that involves the internal organs (liver, spleen, lymph nodes, bone marrow), in addition to the skin |
Atopic dermatitis | • Chronic, highly pruritic inflammatory skin disease • Clinical manifestations vary with age |
Bullous pemphigoid | • Chronic, autoimmune, blistering skin disease |
Erythema multiforme | • Acute, self-limited, skin condition • Considered to be a type IV hypersensitivity reaction to certain infections, medications, and other various triggers |
Familial cold autoinflammatory syndrome | • Rare, inherited inflammatory disorder characterized by recurrent episodes of rash, fever/chills, joint pain, and other signs/symptoms of systemic inflammation triggered by exposure to cooling temperatures • Onset usually occurs during infancy and early childhood and persists throughout the patient’s life |
Fixed drug eruptions | • Lesions occur from exposure to a particular medication and occur at the same site upon re-exposure to the offending medication • Lesions usually blister and leave residual pigmentation |
Subacute cutaneous lupus erythematosus | • A non-scarring, photosensitive skin condition • May occur in patients with systemic lupus erythematosus (SLE) and Sjögren syndrome |
Pruritic urticarial papules and plaques of pregnancy | • Benign skin condition that usually arises late in the third trimester of a first pregnancy |
Muckle-Wells syndrome | • Rare genetic disease that causes hearing loss and recurrent hives • May lead to amyloidosis |
Schnitzler's syndrome with monoclonal IgG kappa gammopathy | • Rare disease characterized by chronic, non-pruritic hives, periodic fever, bone and joint pain, swollen lymph glands and an enlarged spleen and liver |