### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I developed a rash last Friday- early AM. I went to urgent Care on Sat.  It was mostly on my forearms with maybe 20 spots on each arm.  I also had red rash located on my lower left calf around a deep bruise that  I got from falling on stone stairs about 10 weeks ago.  They gave me Keflex and Ranitidine to take with OTC Benadryl.I followed up with my PCP this Tueasday.  She gave me an antihystimie to take RX (Hydroco)I went tot he ER on Wednesday per my PCPs instruction due to sever ankle swelling.  I have a history of FVL, DVT ad PE.  They ruled out a clot and said there was no way to say what the rash was from and to f/u with my PCP.I went back to my PCP today and she say it is scabies???The rash is much worse toaday- hudreds of small bumps- but hy scabies now after seing 4 doctors already?I am a 37yo female.

### output:

Hi, To comment on probable cause, I would like to get few more details-Any associated fever? Is the rash itchy? Is it just a discoloration or raised above the skin?  Was the ankle swelling there on both sides, or only on the injured side? A picture of the lesion would be more helpful to interpret. Scabies usually cause rash initially on skin fold area like wrist, elbow, umbilicus, genitals and between digits, which will be itchy especially at night. It will respond to ointments like permethrin applied all over and antihistamine like levocetirizine to relieve itching. If the rash is not getting down by 2 days of the given treatment, I would recommend you to consult a dermatologist. Hope I have answered your question. Let me know if I can assist you further. 