HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties
159 Doctors Online

By proceeding, I accept the Terms and Conditions

Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

HCM Blog Instant Access to Doctors
HCM BlogQuestions Answered
HCM Blog Satisfaction

What Causes A Huge Itchy Bruise On The Penis Post Intake Of Bactrim?

Ok so a few things happened about 7 days ago my wife gave me a pretty aggressive blow job. Two days later I was put on Bactrim for an abscess on my leg (unrelated). The next day I started to have some bad reactions to the Bactrim but now I have like a huge bruise (discoloration and itchy) on the skin of my penis. I was told by my doctor to stop the Bactrim which I did two days ago. But my penis is not getting better .Not sure if it is trauma or the meds but what should I do
Tue, 9 Aug 2016
Report Abuse
General & Family Physician,  's  Response
Fixed dose eruption
This is most probably fixed drug eruption (FDE). Fixed drug eruption is a type of allergic reaction to a medicine. It characteristically recurs in the same site each time a particular drug is taken. The lesions usually develop within 30 minutes to 8 hours of taking the drug. FDE normally resolves with hyperpigmentation and may recur at the same site with re-exposure to the drug. Bactrim is a common drug involved in FDE.
Advice
1.     Stop Bactrim immediately and never take it in future. Keep a card in your pocket mentioning that you are allergic to Bactrim
2.     Apply betamethasone cream (Betnovate – C cream) locally thrice daily.
3.     Tablet levocetirizine 5 mg daily per oral for 5 days
Hyperpigmentation may persist for a long time. It is totally harmless and no treatment is needed for this.
Thanks!
I find this answer helpful
Note: For further follow up on related General & Family Physician Click here.
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]
Share on
 

Related questions you may be interested in


Loading Online Doctors....
What Causes A Huge Itchy Bruise On The Penis Post Intake Of Bactrim?

Fixed dose eruption This is most probably fixed drug eruption (FDE). Fixed drug eruption is a type of allergic reaction to a medicine. It characteristically recurs in the same site each time a particular drug is taken. The lesions usually develop within 30 minutes to 8 hours of taking the drug. FDE normally resolves with hyperpigmentation and may recur at the same site with re-exposure to the drug. Bactrim is a common drug involved in FDE. Advice 1. Stop Bactrim immediately and never take it in future. Keep a card in your pocket mentioning that you are allergic to Bactrim 2. Apply betamethasone cream (Betnovate – C cream) locally thrice daily. 3. Tablet levocetirizine 5 mg daily per oral for 5 days Hyperpigmentation may persist for a long time. It is totally harmless and no treatment is needed for this. Thanks!