HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

What are the causes of knee pain out of the blue?

A doctor has provided 1 answer

Several possibles: Knee pain can be related to several causes including arthritis, tendinitis, bursitis or tears.

Answered 8/9/2013

5k views

Thank

Related Questions

A member asked:

My husband has a blue dot bump on his knee that causes pain every once and a while what could it be ?

A doctor has provided 1 answer

A member asked:

What are the purple blue bloches appearing around knees and lower legs. What is the cause?

A doctor has provided 1 answer

A member asked:

I have what looks like bruising/discoloration behind my knee, but it's painless. It's a brown color, not purple/blue. What could be the cause?

A doctor has provided 1 answer

A member asked:

I fell twice last wk and now i have bruises on my knee,they look blue and yellow, is that normal?also have 2 hip implants 11 yrs ago,could i have fallen cause of them wearing out? i still have my scooter from it and wondered if i should use that?

2 doctors weighed in across 2 answers

A member asked:

What causes blotchy bruises on back of knee and leg? Red & almost black & blue. Have not sleep feet are tingling have legs elevated now it usually f

A doctor has provided 1 answer

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

What are possible causes of knee pain ?
What can cause knee pain?
What are some causes of constant knee pain?
What causes my knee pain?
What can cause knee pain and how do I manage it?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.