Final answer:
The disorder with overlapping features of systemic autoimmune conditions mentioned in the question is Mixed Connective Tissue Disease (MCTD), not listed in the provided options. Systemic lupus erythematosus and rheumatoid arthritis are both autoimmune diseases that exhibit different sets of symptoms.
Step-by-step explanation:
The disorder described in the question is characterized by overlapping features of at least two of the following: systemic lupus erythematosus, dermatomyositis/polymyositis, systemic sclerosis, rheumatoid arthritis, is known as Mixed Connective Tissue Disease (MCTD). Unfortunately, MCTD is not among the options provided in the question. This is a rare autoimmune disorder that may present various symptoms such as psychological fatigue, loss of appetite, butterfly rash, joint arthritis, and muscle aches. MCTD is often considered when a patient presents symptoms or serological evidence of more than one systemic autoimmune rheumatic disease.
Systemic lupus erythematosus (SLE) is a chronic autoimmune condition marked by autoimmunity to an individual's own DNA and proteins, leading to multisystem organ dysfunction. Rheumatoid arthritis manifests as extensive damage to joints as seen in x-rays and is considered a type III hypersensitivity reaction.
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