For the differential diagnosis, factitial
purpura, coagulation and platelet disorders, von Willebrand disease, vasculitis and systemic lupus erythematosus should be considered.
cheilitis stands out as a distinct subtype of contact cheilitis, usually triggered by a stressful event (possible self-damaging behavior).
Silicone injections cause a factitial
oral lesions in an autistic paediatric patient.
proctitis: A restudy at the University of Minnesota.
There are three pathophysiological categories of pseudoainhum- (1) congenital constricting bands are caused by the umbilical cord; (2) constriction by external forces, such as hairs or threads, which are generally factitial
; and (3) constricting bands secondary to other diseases.
pemphigus-like lesions," Medicina Oral, Patologia Oral Y Cirugia Bucal, vol.
Granulomatous disorders Nongranulomatous disorders (i) Cutaneous sarcoidosis (i) Hidradenitis suppurativa (ii) Tuberculosis (ii) Pyoderma gangrenosum (iii) Syphilis (iii) Impetigo (iv) Mycobacterial (iv) Erythema nodosum infections (v) Factitial
dermatitis from (v) Actinomycosis factitial
injection of (vi) Deep fungal infections foreign substances (vii) Chronic lymphedema (vi) Schistosomiasis resulting from obstruction (vii) Lymphogranuloma (viii) Erysipelas venereum (x) Foreign body reaction (viii) Granuloma inguinale (ix) Chronic cellulitis
Clues to factitial
dermatitis include linearity and unnaturally appearing defects with angulated borders.
The differential diagnosis of a chronic leg ulcer includes venous or arterial ulcers, malignancies (SCC, BCC, lymphoma, melanoma), infectious ulcers (bacterial, deep fungal), pyoderma gangrenosum, and traumatic or factitial
(1) Interestingly, the features of neutrophilic lobular and/or septal panniculitis, as in ENL, are also seen in the subcutaneous variety of Sweet's syndrome and needs differentiation from other dermatoses with similar histology (alpha 1-antitrypsin deficiency, factitial
panniculitis, infection, leucocytoclastic vasculitis, pancreatitis, and rheumatoid arthritis).
Possible mechanisms of factitial
injury of the subcutaneous fat include injection, blunt trauma, and temperature change.