Q. My 6-year-old son has a clicking sound in his knee. Is it due to vitamin D deficiency?

Answered by
Dr. Naresh Chelakalapelli
and medically reviewed by Dr. Sneha Kannan
This is a premium question & answer published on Apr 28, 2021 and last reviewed on: May 08, 2021

Hi doctor,

My son is 6 years and 4 months old. His height is 45 inches and weight is 19.3 kg. Since the last two years, we noticed that he is not gaining weight and size, and his weight percentile is dropping compared to how he was two years back. He is looking skinny now, and his knee makes multiple clicking sounds most of the time whenever he stands up after sitting in a squat position for the last six months. Now he started complaining of mild pain during that clicking sound. I have seen the knee clicking sound in people aged 50 or above whenever they stand up. He is eating very well. He is physically very active. We did not take him out much in sunlight because of the COVID situation for the last year, and his school is remote. Not sure if vitamin D deficiency is causing this. I have a few questions. Is this sound normal for his age? How to diagnose this? He did not have a fever or feel sick in the last year. Is there any infection like parasites, bacteria, or viral that could cause him to go thin but without fever or sickness? What tests are available for his age?



Welcome to

1. Yes this sound may result due to any minor ligament injury (patellofemoral syndrome), the child needs to take rest and painkillers if needed.

2. If it is not resolving or causing a problem, you can go for an MRI (magnetic resonance imaging) of the knee.

3. Infection is unlikely, try to give high-calorie foods. Parasitic infection may not be common in developed countries, but I suggest you consult a physician at your place and take tablet Albendazole for infection, if any. And Vitamin D 800 IU per day, if sun exposure is minimal.

4.CBP (complete blood picture) and vitamin D levels to be checked.

Differential diagnosis:

Ligament injury.
Vitamin D deficiency.

Preventive measures:

Sun exposure.

Regarding follow up:

If the knee problem persists, get an MRI of the knee, and consult an orthopedic surgeon.

Was this answer helpful?


Same symptoms doesn’t mean you have the same problem. Consult a doctor now!

Related Questions:
What are the ways to strengthen my ankles?

Giving a brief into the ligament injury which happens in the ankle ... Ligaments do not heal as a soft tissue again but a fibrosed one which is more rigid than the original ones ... Usually, ankle injur...   Read full

Had PCL surgery before five weeks. When can I walk without support?

You had a PCL (posterior cruciate ligament) injury five weeks back which was managed by a screw fixation ...   Read full

Does vitamin deficiency cause twitching and tingling?

I am also a gastric bypass patient and have a history of low B12, iron saturation and low vitamin D ... I visited my family doctor and he said that the twitches were probably from low vitamin B12...   Read full


Also Read Answers From:

ideaComprehensive Medical Second Opinion.Submit your Case

Also Read

Management of Coronasomnia
Coronasomnia refers to increased sleep problems among people during the COVID-19 pandemic. Read the below article to get...  Read more»
Balantidiasis - Causes, Signs and Symptoms, Diagnosis, Treatment, and Prevention
Balantidiasis is a rare bacterial infection caused by a parasite called Balantidium coli. Read the article below to know...  Read more»
JAK Inhibitors in Treating Rheumatoid Arthritis
Doctors mainly suggest JAK or Janus kinase inhibitors for patients with rheumatoid arthritis to ease their symptoms. Rea...  Read more»

Ask your health query to a doctor online?

Ask a Paediatrician Now

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare 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. Read our Editorial Process to know how we create content for health articles and queries.