An elderly male presents with pain in his shoulders and hands. ESR is 105 mm/L. History includes transient blindness and unilateral headache. (SELECT 1 DIAGNOSIS)
**Core Concept**
The patient's presentation is suggestive of Giant Cell Arteritis (GCA), a form of large vessel vasculitis that predominantly affects the elderly. This condition is characterized by inflammation of the aorta and its major branches, leading to symptoms such as pain and stiffness in the shoulders and hands, transient visual disturbances, and headaches.
**Why the Correct Answer is Right**
GCA is often associated with an elevated ESR, which is a nonspecific marker of inflammation. The patient's history of transient blindness is consistent with temporal arteritis, a complication of GCA that can lead to visual loss if left untreated. The inflammation of the aorta and its branches can also cause headaches and pain in the shoulders and hands. The diagnosis of GCA is typically made based on a combination of clinical findings, laboratory results, and imaging studies.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely a distractor related to another form of vasculitis, such as Polyaeritis Nodosa (PAN). However, PAN typically presents with a more widespread pattern of inflammation and is less likely to be associated with transient blindness.
* **Option B:** This option may be related to a rheumatologic condition such as Rheumatoid Arthritis (RA). However, RA typically presents with a more symmetric pattern of joint inflammation and is less likely to be associated with transient blindness.
* **Option C:** This option may be related to a neurologic condition such as Transient Ischemic Attack (TIA). However, TIA is typically associated with a more focal pattern of neurological deficits and is less likely to be associated with pain in the shoulders and hands.
**Clinical Pearl / High-Yield Fact**
A key feature of GCA is the presence of temporal artery tenderness, which can be elicited by gently palpating the temporal arteries. This finding is often absent in patients with other forms of vasculitis or rheumatologic conditions.
**Correct Answer: C. Temporal Arteritis**