Thanks for asking on HCM,
It looks fixed drug eruption
The lesions usually develop within 30 minutes to 8 hours of taking the drug. They are sometimes solitary at first, but with repeated attacks new lesions may appear and existing ones may increase in size. Lesions are more common on the limbs; the hands and feet, genitalia (glans penis) ,lips and perianal areas
As healing occurs, crusting and scaling are followed by a persistent dusky brown colour at the site. Pigmentation from FDE fades when the causative drug is avoided.
Local or general symptoms accompanying an FDE are mild or absent.
The number of drugs capable of causing fixed eruptions is large. Most are dueto the following:
Paracetamol /phenacetin and other pain killers (Panadol and many other makes)
Nonsteroidal anti-inflammatories (NSAIDs) including ibuprofen (Voren,Brufen, Motrin, Nurofen, Panafen)
Sedatives including barbiturates, benzodiazepines
Hyoscine butylbromide (Buscopan, Scopoderm)metamizole.
(an old-fashioned laxative for constipation)
The main goal of treatment is to identify the causative agent and avoid it. Treatment is Systemic antihistamines and topical corticosteroids
may be all that are required.
Tell me after 1 week
Dr Sher bhutto