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My MedlinePlus Weekly Newsletter: Headaches

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2020 update to My MedlinePlus Newsletter logo

December 8, 2021

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woman with a headache pressing on her temples


Almost everyone has had a headache. It’s the most common form of pain and a major reason people miss days at work or school or visit a doctor. The most familiar types of headache include:

  • Tension
  • Migraine
  • Cluster
  • Sinus

Most people can feel better by making lifestyle changes, learning ways to relax, and taking pain relievers. Not all headaches require a doctor’s attention. But sometimes headaches warn of a more serious disorder. When headaches occur three or more times a month, preventive treatment is usually recommended. Learn more about headaches.

Drug Allergies

A drug allergy is an immune response in the body that produces an allergic reaction to a medicine. Some common allergy-causing drugs are:

  • Seizure drugs
  • Insulin (from animal sources)
  • Iodine in x-ray contrast dyes
  • Penicillin and related antibiotics
  • Sulfa drugs

Common symptoms of a drug allergy include:

  • Hives
  • Itching of the skin or eyes (common)
  • Skin rash (common)
  • Swelling of the lips, tongue, or face
  • Wheezing

There is generally no way to prevent a drug allergy. If you have a known drug allergy, avoiding the drug is the best way to prevent an allergic reaction. You may also be told to avoid similar medicines. Find out more about drug allergies.


Biotin (vitamin B7) is found in foods like eggs, milk, and bananas. It’s an important part of enzymes in the body that break down substances like fats and carbohydrates. There isn’t a good test for detecting low biotin levels, so it’s usually identified by its symptoms, which include thinning hair and red scaly rash around the eyes, nose, and mouth. Biotin supplements might interfere with some lab tests so talk with your doctor if you are taking biotin supplements and need to have any blood tests.

Easy Meatballs

These easy meatballs are quick to put together and bake for one hour. Try them on sliders, with spaghetti, or as an appetizer.