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What causes sudden hair loss?

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When your locks fall out suddenly, instead of gradually thinning over time, it’s usually from something other than male pattern baldness. Other causes include:

For most of these issues, your hair will grow back once you take care of what’s causing it.

  • Diseases like anemia or a thyroid problem
  • Radiation or chemotherapy treatments
  • Medications, such as blood thinners, high doses of vitamin A, and steroids that some men take to help build muscle, called anabolic steroids
  • Scalp infections
  • Problems with your diet, like getting too little iron or too much vitamin A
  • Stress
  • Keeping hairstyles like tight ponytails, cornrows, or braids for many years

From: Why Am I Losing My Hair? WebMD Medical Reference

SOURCES:

American Hair Loss Association: “Introduction.”

Genetics Home Reference: “Androgenetic alopecia.”

American Hair Loss Association: “Causes of Hair Loss.”

FamilyDoctor.org: “Hair Loss: Overview”

NHS choices: “Hair loss.”

American Academy of Dermatology: “Hair loss.”

FamilyDoctor.org: “Hair Loss: Causes & Risk Factors.”

Reviewed by Michael W. Smith on December 07, 2017

SOURCES:

American Hair Loss Association: “Introduction.”

Genetics Home Reference: “Androgenetic alopecia.”

American Hair Loss Association: “Causes of Hair Loss.”

FamilyDoctor.org: “Hair Loss: Overview”

NHS choices: “Hair loss.”

American Academy of Dermatology: “Hair loss.”

FamilyDoctor.org: “Hair Loss: Causes & Risk Factors.”

Reviewed by Michael W. Smith on December 07, 2017

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What conditions have been linked to male pattern baldness?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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