Doxycycline is used to treat infections caused by bacteria as it is an antibiotic. It is used as a treatment for pneumonia, acne, cholera, syphilis, and early Lyme disease. Red rashes, diarrhea, nausea, and vomiting are its common side effects.

Recently Answered Questions Recently Answered Questions

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Why am I having numbness in the nails of my thumb when the skin becomes thick?

Query: Hi doctor,My skin on the side of my thumbnail cracks when it becomes thick and it is not painful. When the skin becomes thick, my thumb starts to have numbness and so I remove the cracked dry outer skin. When I do this, I can see fresh skin under it. I break the skin and it becomes painful and tende...  Read Full »

Dr. Deepti Shukla

Dermatologist, Venereologist

Answer: Hi, Welcome to From this history, it seems that you have developed paronychia. It occurs due to infection of skin around the nails either due to bacteria or candida. It can occur due to trauma or injury to the nails or irritation. As mentioned in the history, washing hands repeatedly ...  Read Full »

Are red rashes on the head of the penis with inflammation a concerning issue?

Query: Hello doctor, I have been suffering from a rash or changes to the head of my penis. I was informed it was a yeast infection and tested negative for STIs. However, after treatment, I noticed a little progress. I have seen a urologist and a dermatologist, neither of which have been able to figure it ...  Read Full »

Dr. Ankush Jairath


Answer: Hello, Welcome to It seems to be balanitis. Do you have any urinary complaints like frequency, urgency, low stream, nocturia, dribbling? Do you have any history of diabetes, hypertension, or any medications you are on? Is there any history of unprotected sex with a new partner in th...  Read Full »

What are the causes of PID?

Query: Hello doctor, My wife is diagnosed with PID while we went to the scanning center. What will be the cause? She did not have any STI, and negative for all tests. She did not have any pain also. Is it curable? I am very tensed. Please help.  Read Full »

Dr. Snehal Laul

Dermatologist, Venereologist

Answer: Hello, Welcome to PID (pelvic inflammatory disease) is a term used for ascending the upper genital tract infection in females. Infection may spread to the pelvic peritoneum. Does she have a history of abortion?  Read Full »

Which topical medication best suits acne and acne marks?

Query: Hello doctor,I had acne. It has gone now, but it left some marks. What should I do to clear it? And what should I use on the active acne?  Read Full »

Dr. Arunima Dhabal

Dermatologist, Venereologist

Answer: Hi, Welcome to I have seen the image you have uploaded (attachment removed to protect patient identity). Currently, you have quite a few active acne lesions, along with some spots from the previous acne. So I will suggest you take an oral antibiotic course for a month to reduce ...  Read Full »

What is the treatment for epididymo-orchitis?

Query: Hello doctor, I have an epididymo-orchitis infection. I went to the urologist, and he gave me antibiotics, taking it for two months, but the problem still is not going away. What to do in this situation? I am currently on Ciprofloxacin 500 mg, Fosfomycine 3000 mg, and Azithromycin 500 mg.   Read Full »

Dr. Samer S J Altawil


Answer: Hi, Welcome to Epididymoorchitis is diagnosed mainly on ultrasound. It is a painful condition of the scrotum. It is mainly due to infections in the urinary tray secondary to STD (sexually transmitted disease) or obstruction to the lower urinary system like in the urethra or prostate...  Read Full »

Will continuous intake of Doxycycline for 10 days cause intracranial hypertension?

Query: Topic: Doxycycline and Intracranial Hypertension. I was prescribed 10 days Doxycycline (100mg twice a day) for a mild ear infection. I went back at 5 days and they said the infection was cleared and that I was able to stop taking it. I felt kind of stuck, because I was afraid to stop taking an ant...  Read Full »

Dr. Peter Grutas

Internal Medicine Physician, General Medicine Physician

Answer: Hello! Thank you for this information. Although doxycyline may induce intracranial hypertension, it is relatively safe as long as you are guided by a doctor. Risk factor of developing intracranial hypertension in women includes obesity and with history of intracranial hypertension. Otherwise, it is...  Read Full »

Does sinusitis usually cause loss of taste?

Query: Hi doctor, I am a 40 year old female, non smoker. I had a sinus infection as a result of cold nearly two months ago. I was put on Doxycycline for two weeks and then a steroid nasal spray when the inflammation in my nose had not resided. I can smell things quite clearly up close to my nose but canno...  Read Full »

Dr. Shyam Kalyan N

Allergy Specialist, General Practitioner, ENT Otolaryngologist, Family Physician

Answer: Hi, Welcome to We will help you alleviate the problem. I understand that you are a 40 year old otherwise healthy lady suffering from sinus infection. You perceive smells close up your nose but have decreased taste sensation. You are worried about when the taste sensation will return a...  Read Full »

I have penile discharge even after having medications. What should I do?

Query: Hello doctor,I had gonorrhea or chlamydia five times. I had penile discharge before four months. I started taking Doxycycline, Azithromycin on and off for four months. When I take medicine, the discharge color changes from yellow to clear, and it is not all the time, mostly when I squeeze my penis (...  Read Full »

Dr. Aditya Gupta

Psychiatrist, Sexologist

Answer: Hello, Welcome to As there are no signs or symptoms like fever, wound, pain, burning micturition, or active discharge, the possibility of an active infection seems to be unlikely. The thin line you are mentioning that appears on the penile tip on squeezing seems more like the lubricat...  Read Full »

Why do I get recurrent urinary tract infection?

Query: Hello doctor, I am a 22-year-old male. I took a urinalysis test before 15 days and the results showed UTI. I consulted a doctor and he prescribed me to take Ciprofloxacin once a day for seven days. After taking the medication for seven days, I took another urinalysis test and the result revealed I ...  Read Full »

Dr. Samer S J Altawil


Answer: Hi, Welcome to Apparently, from your description, you have prostatitis which is inflammation and infection of the prostate gland present below the bladder in male patients. Prostatitis is difficult to treat with antibiotics and needs a longer course of antibiotics for at least four w...  Read Full »

What causes pus-filled bumps on the scalp?

Query: Hello doctor, I am 32 years old. I am getting bumps with pus on my scalp. I have already contacted dermatologist but no luck. It has been more than a year I am suffering with this. Please suggest best tablets or shampoo.  Read Full »

Dr. Atishay Bukharia

Cosmetologist, Dermatologist, Family Physician, General Practitioner, HIV AIDS Specialist, Venereologist

Answer: Hi, Welcome to I need to know a few more things about your health issue. Is there any aggravating or relieving factor? Is itching present? What work do you do? Did you have response to any medication? Please do attach pictures and revert back with the answers to a ...  Read Full »

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Disclaimer: All health Q&As published on this website are not intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek the advice from your physician or other qualified health-care providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website.