In regards to the onset, the von Zumbusch form may "supervene on any previous pattern of psoriasis". It also may or may not recur periodically. Generalized pustular psoriasis of pregnancy (Impetigo herpetiformis)
This form of GPP tends to have symmetrical and grouped features. It usually onsets early in the third trimester of pregnancy, and generally persists until the child is born, but occasionally long after. In 2009, Dr. Debeeka Hazarika, president of the North East States branch of the Indian Association of Dermatologists, Venereologists and Leprologists (IADVL), published an article titled "Generalized pustular psoriasis of pregnancy successfully treated with cyclosporine" in Indian J Dermatol Venereol Leprol. As reported by Hazarika, there have been up to nine instances where the disease was recurrent in subsequent pregnancies. See Case Report 2
In 1979, Frank R. Murphy, MD and Lewis P. Stolman, MD reported on the case of a woman who developed generalized pustular psoriasis in response to doses of progestins, suggesting a link between progestogens and GPP. Most cases of GPP in pregnancy occur late in the third trimester, generally when production of progesterone increases. Infantile and juvenile
GPP is a rare disease in general, but even more so in children. In 2010, an article was published in Pediatric Dermatology by the Department of Dermatology, University of São Paulo. The report acknowledged that psoriasis is a relatively common skin condition in children, but "the pustular variant is rare." Out of 1,262 cases of psoriasis in children, a "0.6% rate of pustular variants" was found.
Astasia-abasia refers to the inability to either stand or walk in a normal manner. Astasia refers to the inability to stand upright unassisted. Abasia refers to lack of motor coordination in walking. The term abasia literally means that the base of gait (the lateral distance between the two feet) is inconstant or unmeasurable. When seen in conversion disorder, the gait is bizarre and is not suggestive of a specific organic lesion: often the patient sways wildly and nearly falls, recovering at the last moment. An acquired total inability to stand and walk can be seen in organic neurological diseases, including stroke, Parkinsons disease, damage to the cerebellum, Guillain–Barré syndrome, normal pressure hydrocephalus and many others. In normal pressure hydrocephalus, for example, when the condition remains untreated, the patients gait becomes shortened, with frequent shuffling and falls; eventually standing, sitting, and even rolling over in bed become impossible. This advanced state is referred to as "hydrocephalic astasia-abasia". Phobias
Astasia and/or abasia are  associated with the corresponding fears of walking and/or standing, variously called stasophobia, basophobia, stasiphobia, basiphobia, stasobasophobia, stasibasiphobia, etc., sometimes turning into pathological forms, i.e., phobias. See also
Blocqs disease, an illness named after Paul Oscar Blocq

References


== External links ==