The American College of Rheumatology ( ACR ) established 11 criteria in 1982, which were revised in 1997 as a classificatory instrument to operationalise the definition of SLE in clinical trials. They were not intended to be used to diagnose individuals and do not do well in that capacity.
For the purpose of identifying patients for clinical studies, a person has …

Psoriasis is a chronic, non-contagious, autoimmune disease involving keratinocyte proliferation along with inflammation and angiogenesis. It is sometimes associated with arthritis, myopathy, enteropathy, spondiolytic joint disease or AIDS. It frequently affects skin of elbows, knees, scalp, lumbosacral areas, intergluteal cleft and glans penis. It is characterized by pink to salmon colored psoriatic plaques covered and demarcated by silver white …

PEMPHIGOIDS:

disorder characterized by the eruption of multiple , tense bullae either over an erythematous or normal skin in an elderly patient.

Age Old: ( 6-8 decades)
General Health: Good
Site : Flexural ( thigh, flexural of arms, axilla, groins)
Mouth Ulcers: Rare
Nature of Blisters: Large and tense over normal, urticarial or erythematous base. Localised or widespread. Rupture and show tendency to heal.
Self limiting lesions
Antibodies: …