• question-icon

    What causes a lump in the armpit and weight loss in a child?

Posted on Fri, 4 Aug 2017 in Internal Doctor Category
Question: Hi, my boy is 15 weeks old now. His birth weight was 2.64kg. his weight had increased drastically in the first 2 months. His weights were 4.7 in 6 the week & 5.7 in the 10 the week. But since then his weight gain seems to decrease. At 13 th week it's 5.913 kg & at 15 week it's 6.03 kg. I consulted the paed. She said since the baby has already doubled the birth weight, it's not an issue. But this decrease in weight gain suddenly seems to worry me. He has increased hardly 117 g in the last 2 weeks.Ia exclusively breast feeding him. Also today I noticed a small lump in his armpit ( same arm as the one in which BCG was taken). The doc said it might be bacterial infection though possibility of infection from tb exists. She prescribed antibiotics for a week & asked us to weight. Please advice on this as well.what could this possibly be?

The baby doesn't seem concerned with lump. It's not red either. He has no pain
Answered by Dr. Remy Koshy 4 hours later
Brief Answer:
Explained below,

Detailed Answer:
Thanks for posting your query in HealthcareMagic,

I have gone through your query and can certainly understand your apprehensive situation,

First let me point out that the weight gain for your baby boy is adequate irrespective of the recent event. Children tend to shed weight due to their change of activities but will soon catch up to the lost weight. Keep continuing to breast feed exclusively.

In respect of the lump in the armpit, ideally, to look for any signs of TB infection, the scar where the vaccination was taken, has to show some changes like swelling, redness, blister formation etc. If the scar has healed properly, there is no need for any further worries. This newly formed lump in the armpit, if not tender, can only be a lymph node probably due to some infection, for which the antibiotics prescribed should be enough.

As long as the baby is active and playful, continue feeding him, no further interventions required at this point of time.

I hope this helps,

Please feel free to discuss further or else kindly close the query and share your positive feedback,

Above answer was peer-reviewed by : Dr. Remy Koshy
Follow up: Dr. Remy Koshy 20 hours later
Hi doc, usually how many days does it to take for the infection to subside? & What are the reasons for infection​ in armpit area?
Answered by Dr. Remy Koshy 3 hours later
Brief Answer:
Kindly see below,

Detailed Answer:
Hi again,
Thanks for writing back,

A swollen lymph node indicates the presence of an active infection in the body. It need not be an infection to the armpit itself. In some cases, especially in children between 2-5 months old, mild complication of BCG vaccination is noted. Mild complication appears as swollen lymph nodes in the axillae, neck or elsewhere in the body. It is bound to resolve by itself within a few weeks time. The use of antibiotics in this scenario is sometimes controversial.

But since your treating doctor recommends taking antibiotics in order to rule out any other possible causes of infection, it is better to continue with it. Like I mentioned earlier, as long as the child is active and playful, I would strongly recommend you to wait and remain positive.

I hope this helps,

Please feel free to discuss further,

Above answer was peer-reviewed by : Dr. Remy Koshy
Answered by
Dr. Remy Koshy

General & Family Physician

Practicing since :2014

Answered : 507 Questions


The User accepted the expert's answer

Share on

Recent questions on  Birth weight

doctor1 MD

Hi , My baby is 70 days old - she went through the sugery for NEC on the 10 day of her birth - they didnt joined the remaining two parts of the...

doctor1 MD

Hi doctor, I have a daughter who is 45 days old and nowadays she is feeding only for 10min per feed during night is it ok? And how long should I...

doctor1 MD

hi I am a new lactating mother. m confused if my milk is sufficient for my baby.. coz she often cries even after I feed for 20 minutes n takes her...

doctor1 MD

I have a 3 months 15 days old baby. He was 3.5Kgs at the time of birth and 6.5 kgs now. I would like to know when can i start introducing solids to...

doctor1 MD

Hi I am the mother of 7 children who were small birth weight babies average 6.3 lbs to 6.6. Now my daughter has had a child of her own and her...

doctor1 MD

Dear Doctor, My baby girl is 8 .5 months . Her birthweight was only 2kgs as i had gestational hypertension. Her current weight is 6.5kg. She is...

doctor1 MD

my 45 days baby urinating more than 9 times per day and crying after urine pass..she is also having some white particles in stool....No weight gain...

Get personalised answers from verified doctor in minutes across 80+ specialties

136 Doctors Online

By proceeding, I accept the Terms and Conditions

HCM Blog Instant Access to Doctors
HCM Blog Questions Answered
HCM Blog Satisfaction
Questions Answered By Dr. Remy Koshy
  • Q - Suggest remedies for severe cough

  • Q - How long does Amoxicillin take to show effect?

  • Q - What causes weakness and tingling sensation in the legs?

  • Q - Suggest treatment for severe abdominal bloating and discomfort

  • Q - What causes headache and excessive burping after skipping a meal?

  • Q - Suggest treatment for back pain

  • Q - What causes mild pain in the ankle while walking?

  • Q - Suggest treatment for symptoms of temporomandibular joint dysfunction

  • Q - Is pregnancy possible despite taking a contraceptive pill?

  • Q - What does this blood test report indicate?