Unexplained weight loss and fatigue in an 18-year-old could be due to a variety of conditions, so it’s important to get a thorough evaluation. First, I’d recommend a complete blood count (CBC) to look for anemia or infection, which could explain your fatigue. A comprehensive metabolic panel would also be useful to assess kidney and liver function, blood sugar levels for diabetes screening, and electrolytes. Thyroid function tests (TSH, T3, and T4) should be done to rule out hyperthyroidism, a condition that can cause weight loss and fatigue. Since stress seems to play a role, it might be worth exploring whether there’s an underlying psychological component, such as anxiety or depression, so discussing these aspects with your doctor could prove insightful. Hormonal imbalances, like those involving cortisol (Cushing’s syndrome), might also be considered, requiring tests like cortisol levels or a dexamethasone suppression test. Conditions like celiac disease or gastrointestinal issues might lead to poor nutrient absorption and weight loss, so a celiac panel or other GI evaluations could be valuable, depending on any accompanying symptoms. If you’re experiencing symptoms like night sweats, persistent fever, or lymph node swelling, it may suggest an infection or malignancy, making it crucial to seek immediate medical attention. Ensuring you’re eating a balanced diet and maintaining a healthy lifestyle alongside these evaluations is advisable. Share all symptoms with your doctor to facilitate precise diagnosis and management.
What tests should I get for unexplained weight loss and fatigue at 18 years old?
Hello Doctor, I am 18 years old. My height is 5'8" and my current weight is 58 kg. I have lost around 10 kg over the last 1.5 years without intending to. I often feel fatigue and weakness in my body, especially during stress. I also notice changes in my body feelings during stressful periods. I would like to get checked to find the cause of the weight loss and fatigue and know if I need any tests.
How long have you been experiencing fatigue and weakness?:
- More than 6 monthsHave you noticed any other symptoms along with weight loss?:
- Changes in appetiteHow would you describe your stress levels recently?:
- Very high — constant stressHave you made any changes to your diet or exercise routine?:
- Yes, significant changesHow is your energy level throughout the day?:
- Low — often tiredDo you have any family history of health issues?:
- No known family historyHave you experienced any changes in your sleep patterns?:
- Moderate changes — frequent disturbances100% Anonymously
No sign-up needed.
Doctors' responses
Hello dear Weight gain depends upon body metabolism. It can be modified according to diet and exercise Iam suggesting some precautions for improvement. Please follow them for atleast a month Replacement of carbohydrates with protein diet Take nuts and fruits in between meals Be hydrated Avoid junk food Take zincovit multivitamin therapy onca a day for 1 month Take ashwagandha for strength Consume butter and ghee for weight gain Replacement of sugar with jaggery Avoid refined food Do physical exercise atleast half an hour daily Avoid excessive thinking Add milk products for calcium level Below tests are mandatory Serum tsh Lft Rft CBC Esr Serum troponin Cholesterol levels Serum.creatinine Hopefully improvement will occur In case of no improvement consult a dietician in person for better clarity Regards
100% Anonymously
Get expert answers anytime, completely confidential. No sign-up needed.
About our doctors
Only qualified doctors who have confirmed the availability of medical education and other certificates of medical practice consult on our service. You can check the qualification confirmation in the doctor's profile.
