Your brother's symptoms of weight loss, irritability, vomiting, and cough could indicate a serious underlying illness such as a persistent infection, respiratory condition, or another systemic issue that needs prompt evaluation.

🩺 Possible Causes

• Chronic respiratory infections like bronchitis or pneumonia can cause cough, vomiting (due to severe coughing), and weight loss.
• Gastrointestinal issues or metabolic problems might contribute to vomiting and irritability.
• Other systemic illnesses, including tuberculosis or chronic inflammatory conditions, could present with these symptoms.

⚠️ When to Seek Urgent Care

• If vomiting is frequent or severe, leading to dehydration.
• If breathing difficulty or high fever develops.
• If there is rapid weight loss or worsening irritability.

🩺 Recommended Next Steps

• Arrange for a thorough medical evaluation by a pulmonologist (lung specialist) or a general physician as soon as possible.
• Diagnostic tests such as chest X-ray, blood tests, and sputum analysis may be needed.
• Avoid self-medicating and ensure he stays hydrated and rested.

Prompt specialist consultation is important to identify the cause and start appropriate treatment. If symptoms worsen suddenly, seek emergency care immediately.To narrow down potential causes, we will need some more information.Please enter your age.