What Causes Red Spots On Legs?

Posted on Tue, 25 Nov 2014

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Tue, 25 Nov 2014 Answered on

Sat, 20 Dec 2014 Last reviewed on

Question : I started the combination, alendronate and calciferol 3 weeks ago {one tablet a week). Now have circular dark red spots about the size of a dime o my legs. This a.m. I have one really dark quarter size almost necrotic looking. I get a huge rash from Sulfs/trimethoprim red circles about 3 inches in diameter.
I have been taking Cephalexin 500mg daily as UTI prevention. I am 89.
My question is what do you think is going on?

Answered by Dr. Dr. Rahul Kumar (1 hour later)

Brief Answer:
photograph required

Detailed Answer:
Hello
Thanks for the query.
I understand your concern.
Probably you have developed fixed drug eruption. upload a photograph of the involved area.
Its very important for me to see the area in order to give a proper guidance.
There is an option to upload photos on right side of query page. Please utilize that. You can also email reports to YYYY@YYYY with subject as attn Dr XXXXXXX Kumar.
Waiting for your response.
Thank you .

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Dr. Rahul Kumar (5 hours later)

Hi, I have provided some attachments. Please review them.

Answered by Dr. Dr. Rahul Kumar (12 hours later)

Brief Answer:
Drug reaction

Detailed Answer:
Hello
Thanks for the photograph.
It is looking like fixed drug eruption.
Probably you have developed reaction to cephalexin.
It's better to stop cephalexin and change over to another antibiotic, also take an antihistamine tablet.
Apply fluticasone cream on the lesions.
Also get your platelet levels checked.
Let me know if you have any other doubts.
Thank you

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar