The patient, a Chinese woman in her 30s, presented with sudden
flare of her skin eruptions on the legs past 2 weeks. She had been
having multiple erythematous plaques on the abdominal wall and legs
since March 2020 and had tried various topical creams and oral
supplements. As it happened during lockdown she had tried online
medications and topical creams. The lesions on the abdominal wall
improved but suddenly those on the legs flared up with painful pustules.
She denied any fever. Apparently she was on oral methotrexate
previously for psoriasis but according to her, MTX did not help her
much.
Clinical:
Her vital signs are stable. No signs of dehydration.
Extensive
erythematous plaques on the lower limbs. Edges well demarcated. scaly
surface. some of the larger lesions had a central smooth glazed
appearance surrounded by crops of tiny superficial pustules. Post
inflammatory hyperpigmentation were prominent on the anterior abdominal wall.
No nail changes were noted. Joints were normal.
Images:
Diagnosis:
I suspect she may have taken oral corticosteroids and when she stopped the
oral medications, the lesions flare up. A skin biopsy was done. This
may be useful to exclude AGEP. Blood counts/biochem/swab culture including serum calcium were done and pending.
In the meantime, she is on IV fluids, IV antibiotics, topical moisturisers, KMNO4 soaks and topical corticosteroids.
Q1. Would IV hydrocortisone be useful in this patient or avoided at all costs?
Q2. Is it worthwhile to try MTX weekly dose again? Cyclosporin? Oral acetretin would
not be practical for a woman of child bearing age group.
Q3.
Biologics may have a role. Anti IL-36 recently was found to be useful
in pustular psoriasis but this drug is not available yet. Which other
biologics would be useful? Risankizumab?
Thank you for your thoughts on this patient.
Thank you for your thoughts on this patient.