Cephalexin and Hidradenitis - a phase IV clinical study of FDA data


Hidradenitis is found among people who take Cephalexin, especially for people who are female, 50-59 old, have been taking the drug for 6 - 12 months.

The phase IV clinical study analyzes which people take Cephalexin and have Hidradenitis. It is created by eHealthMe based on reports of 22,314 people who have side effects when taking Cephalexin from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

With medical big data and AI algorithms, eHealthMe enables everyone to run phase IV clinical trial to detect adverse drug outcomes and monitor effectiveness. Our original studies have been referenced on 600+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Most recently, phase IV clinial trails for COVID 19 vaccines have been added, check here.

On May, 22, 2022

22,314 people reported to have side effects when taking Cephalexin.
Among them, 27 people (0.12%) have Hidradenitis.

What is Cephalexin?

Cephalexin has active ingredients of cephalexin. It is often used in infection. eHealthMe is studying from 23,591 Cephalexin users for its effectiveness, alternative drugs and more.

What is Hidradenitis?

Hidradenitis (chronic disease of a type of sweat gland) is found to be associated with 506 drugs and 259 conditions by eHealthMe.

Number of Cephalexin and Hidradenitis reports submitted per year:

Could Cephalexin cause Hidradenitis?

Time on Cephalexin when people have Hidradenitis *:

  • < 1 month: 0.0 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 100 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Hidradenitis when taking Cephalexin *:

  • female: 70.37 %
  • male: 29.63 %

Age of people who have Hidradenitis when taking Cephalexin *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 4.17 %
  • 20-29: 4.17 %
  • 30-39: 25.0 %
  • 40-49: 29.17 %
  • 50-59: 37.5 %
  • 60+: 0.0 %

Common drugs people take besides Cephalexin *:

  1. Cymbalta: 12 people, 44.44%
  2. Ativan: 12 people, 44.44%
  3. Humira: 10 people, 37.04%
  4. Doxycycline: 7 people, 25.93%
  5. Cefazolin: 7 people, 25.93%
  6. Keflex: 7 people, 25.93%
  7. Marijuana: 6 people, 22.22%
  8. Colace: 6 people, 22.22%
  9. Metoclopramide: 6 people, 22.22%
  10. Miralax: 6 people, 22.22%

Common side effects people have besides Hidradenitis *:

  1. Abdominal Pain: 7 people, 25.93%
  2. Chest Pain: 7 people, 25.93%
  3. Joint Pain: 7 people, 25.93%
  4. Fever: 7 people, 25.93%
  5. Fatigue (feeling of tiredness): 7 people, 25.93%
  6. Muscle Aches (muscle pain): 7 people, 25.93%
  7. Nausea (feeling of having an urge to vomit): 7 people, 25.93%
  8. Nausea And Vomiting: 7 people, 25.93%
  9. Neck Pain: 7 people, 25.93%
  10. Weight Decreased: 7 people, 25.93%

Common conditions people have *:

  1. Stress And Anxiety: 7 people, 25.93%
  2. Fibromyalgia (a long-term condition which causes pain all over the body): 6 people, 22.22%
  3. Drug Withdrawal Syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation): 6 people, 22.22%
  4. Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 6 people, 22.22%
  5. Breast Cancer: 6 people, 22.22%
  6. Constipation: 6 people, 22.22%
  7. Crohn's Disease (condition that causes inflammation of the gastrointestinal tract): 6 people, 22.22%
  8. Deep Venous Thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis): 6 people, 22.22%
  9. Depression: 6 people, 22.22%
  10. Abdominal Pain: 6 people, 22.22%

* Approximation only. Some reports may have incomplete information.

Do you take Cephalexin and have Hidradenitis?

Check whether Hidradenitis is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related publications that referenced our studies

Related studies

Alternative drugs to, pros and cons of Cephalexin:

Hidradenitis treatments and more:

COVID vaccines that are related to Hidradenitis:

How severe was Hidradenitis and when was it recovered:

Expand to all the drugs that have ingredients of cephalexin:

Common drugs associated with Hidradenitis:

All the drugs that are associated with Hidradenitis:

Common conditions associated with Hidradenitis:

All the conditions that are associated with Hidradenitis:

How the study uses the data?

The study uses data from the FDA. It is based on cephalexin (the active ingredients of Cephalexin) and Cephalexin (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

Who is eHealthMe?

With medical big data and proven AI algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 600+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).


WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

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