Do you recognise this rash?
An otherwise healthy 50-year-old male presents to his new GP with a rash he’s had for several years.
He mentions that the skin eruption becomes erythematous and pruritic after exercising and when he scratches it.
On examination, reddish-brown freckle-like macules are seen on his upper extremities, back and abdomen.
A skin biopsy reveals an increased number of dermal mast cells.
Which of the following is most commonly associated with this patient’s likely diagnosis?
- Interstitial lung disease