Palpable purpura

Not to be confused with Erythema annulare centrifugum.

Palpable purpura is a condition where purpura, which constitutes visible non-blanching hemorrhages, are raised and able to be touched or felt upon palpation.

Causes

Rocky mountain spotted fever
Acute meningococcemia
Disseminated gonococcal infection
Ecthyma gangrenosum
Henoch Schonlein purpura
Polyarteritis nodosa
Leucocytoclastic vasculitis
Microscopic polyangiitis

References

Further reading

Bagai, A; Albert, S; Shenoi, SD (Nov–Dec 2001). "Evaluation and therapeutic outcome of palpable purpura.". Indian journal of dermatology, venereology and leprology 67 (6): 320–3. PMID 17664788.
ARIAS-SANTIAGO, S.; ANEIROS-FERNANDEZ, J.; GIRON-PRIETO, M. S.; FERNANDEZ-PUGNAIRE, M. A.; NARANJO-SINTES, R. (3 March 2010). "Palpable purpura". Cleveland Clinic Journal of Medicine 77 (3): 205–206. doi:10.3949/ccjm.77a.09065.

Hypersensitivity and autoimmune diseases (279.5–6)

Type I/allergy/atopy
(IgE)

Foreign	Atopic eczema Allergic urticaria Allergic rhinitis (Hay fever) Allergic asthma Anaphylaxis Food allergy Milk Egg Peanut Tree nut Seafood Soy Wheat Penicillin allergy

Autoimmune	Eosinophilic esophagitis

- IgM
- IgG

Foreign

Hemolytic disease of the newborn

Autoimmune

Cytotoxic	Autoimmune hemolytic anemia Idiopathic thrombocytopenic purpura Bullous pemphigoid Pemphigus vulgaris Rheumatic fever Goodpasture's syndrome Guillain–Barré syndrome

"Type V"/receptor	Graves' disease Myasthenia gravis Pernicious anemia

Type III
(Immune complex)

Foreign	Henoch–Schönlein purpura Hypersensitivity vasculitis Reactive arthritis Farmer's lung Post-streptococcal glomerulonephritis Serum sickness Arthus reaction

Autoimmune	Systemic lupus erythematosus Subacute bacterial endocarditis Rheumatoid arthritis

Type IV/cell-mediated
(T cells)

Foreign	Allergic contact dermatitis Mantoux test

Autoimmune	Diabetes mellitus type 1 Hashimoto's thyroiditis Multiple sclerosis Coeliac disease Giant-cell arteritis

GVHD	Transfusion-associated graft versus host disease

Unknown/
multiple

Foreign	Hypersensitivity pneumonitis Allergic bronchopulmonary aspergillosis Transplant rejection Latex allergy (I+IV)

Autoimmune	Sjögren's syndrome Autoimmune hepatitis Autoimmune polyendocrine syndrome APS1 APS2 Autoimmune adrenalitis Systemic autoimmune disease

Index of the immune system

Description	Physiology cells autoantigens autoantibodies complement surface antigens IG receptors

Disease	Allergies Immunodeficiency Immunoproliferative immunoglobulin disorders Hypersensitivity and autoimmune disorders Neoplasms and cancer

Treatment	Procedures Drugs antihistamines immunostimulants immunosuppressants monoclonal antibodies

Systemic vasculitis (M30–M31, 446)

Pauci-immune	c-ANCA Granulomatosis with polyangiitis p-ANCA Churg-Strauss syndrome Microscopic polyangiitis

Type III hypersensitivity	Hypersensitivity vasculitis/Henoch–Schönlein purpura

Ungrouped	Acute hemorrhagic edema of infancy Cryoglobulinemic vasculitis Bullous small vessel vasculitis Cutaneous small-vessel vasculitis

Other

Goodpasture's syndrome
Sneddon's syndrome

Index of the circulatory system

Description	Anatomy Arteries head and neck arms chest abdomen legs Veins head and neck arms chest abdomen and pelvis legs Development Cells Physiology proteins

Disease	Congenital Neoplasms and cancer Lymphatic vessels Injury Vasculitis Other Symptoms and signs eponymous

Treatment	Procedures Drugs beta blockers channel blockers diuretics nonsympatholytic vasodilatory antihypertensives peripheral vasodilators renin–angiotensin system sympatholytic antihypertensives vasoprotectives