Baby with recurrent infection of ear & discharge & seborrheic dermatitis with hepatosplenomegaly with cystic skull lesions. Diagnosis is ?
**Core Concept**
The question describes a constellation of symptoms suggestive of a multisystem disorder, likely involving a metabolic or storage disease. The patient's presentation includes recurrent infections, seborrheic dermatitis, hepatosplenomegaly, and cystic skull lesions, which are classic features of a lysosomal storage disorder.
**Why the Correct Answer is Right**
The correct diagnosis is Gaucher's disease, a genetic disorder caused by a deficiency of the enzyme glucocerebrosidase. This enzyme deficiency leads to the accumulation of glucocerebroside in various tissues, including the spleen, liver, and bone marrow. The resulting hepatosplenomegaly and cystic skull lesions are due to the infiltration of glucocerebroside-containing macrophages. The recurrent infections and seborrheic dermatitis are secondary manifestations of the disease.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided.
* **Option B:** This option is not provided.
* **Option C:** This option is not provided.
* **Option D:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
Gaucher's disease is a classic example of a lysosomal storage disorder, and its diagnosis requires a high index of suspicion in patients with unexplained hepatosplenomegaly, recurrent infections, and characteristic skin lesions.
**Correct Answer:** D. Gaucher's disease is a genetic disorder caused by a deficiency of glucocerebrosidase enzyme leading to the accumulation of glucocerebroside in various tissues.