Hidradenitis suppurativa is a disease of?
**Core Concept**
Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease characterized by recurrent, painful abscesses and nodules in the apocrine gland-bearing areas, such as the axillae, groin, and buttocks. It is a disorder of the pilosebaceous unit, with involvement of the apocrine glands.
**Why the Correct Answer is Right**
The pathophysiology of HS involves follicular occlusion, which leads to inflammation, infection, and scarring. The apocrine glands are the primary target in HS, and the disease is often associated with genetic predisposition and hormonal influences. The apocrine glands are located in the deep dermis and play a key role in the development of HS.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because HS is not primarily a disease of sweat glands, although the apocrine glands play a key role.
**Option B:** This option is incorrect because HS is not primarily a disease of sebaceous glands, although the pilosebaceous unit is involved.
**Option C:** This option is incorrect because HS is not primarily a disease of hair follicles, although follicular occlusion is a key factor in the development of the disease.
**Clinical Pearl / High-Yield Fact**
HS is often associated with obesity, insulin resistance, and other metabolic disorders, and treatment may involve a multidisciplinary approach including lifestyle modifications and medical therapy.
**Correct Answer: D. Apocrine glands. Apocrine glands are the primary target in hidradenitis suppurativa.**