Steroid responsive glomerulonephritis are All except
**Core Concept**
Steroid-responsive glomerulonephritis refers to a group of kidney diseases characterized by the presence of immune complex deposition in the glomeruli, which can be treated with corticosteroids. These conditions involve the activation of the complement system, leading to inflammation and damage to the glomerular capillaries.
**Why the Correct Answer is Right**
Steroid-responsive glomerulonephritis typically involves the formation of immune complexes that activate the complement system, leading to the release of pro-inflammatory cytokines and chemokines. Corticosteroids, such as prednisolone, can suppress the immune response by inhibiting the production of these cytokines and chemokines, thereby reducing inflammation and slowing disease progression.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Focal Segmental Glomerulosclerosis (FSGS) is not typically steroid-responsive. FSGS is characterized by the collapse of glomerular capillaries and the formation of sclerotic lesions, which are resistant to corticosteroid therapy.
**Option B:** This option is incorrect because Membranous nephropathy is not typically steroid-responsive in the early stages of the disease. While corticosteroids may be used to treat the condition, they are not effective in all cases, and the disease often progresses despite treatment.
**Option C:** This option is incorrect because IgA Nephropathy (Berger's disease) is not typically steroid-responsive. While corticosteroids may be used to treat the condition, they are not effective in all cases, and the disease often progresses despite treatment.
**Clinical Pearl / High-Yield Fact**
Corticosteroids are most effective in treating steroid-responsive glomerulonephritis when used early in the disease course, and in conjunction with other immunosuppressive agents.
**Correct Answer:** D.