Fatigue, itchy skin and shortness of breath

These symptoms can arise from separate problems or one underlying process. Anaemia may reduce oxygen delivery and cause tiredness and breathlessness; itching may come from dry or irritated skin. Asthma, COPD, bronchiectasis, or acute bronchitis can affect breathing, sometimes with cough or wheeze. Atrial fibrillation or angina may cause breathlessness and reduced energy. Sudden itching with swelling, wheeze, throat tightness, or faintness can signal anaphylaxis.

Arrange prompt medical advice, especially if the symptoms are new, persistent, or worsening. Note when they started, whether breathing is worse with activity or lying down, and any rash, swelling, cough, wheeze, fever, palpitations, or new food, medicine, or product. Avoid a suspected trigger and use prescribed inhalers or allergy medicines only as directed. Do not drive if breathlessness or dizziness makes travel unsafe.

Call emergency services immediately for severe or rapidly worsening breathlessness, blue or grey lips, throat or tongue swelling, wheezing after an exposure, chest pressure, collapse, confusion, or inability to speak normally because of breathing. If you have an adrenaline auto-injector for a known allergy, use it as instructed and seek emergency help. Symptoms that are milder but continuing still need prompt clinical review.

Could anaemia, asthma, heart rhythm, infection, or an allergic reaction explain these symptoms? Do I need breathing tests, blood tests, or heart checks? Which warning signs mean I should call emergency services? Should I avoid any medicine, food, or skin product while this is investigated?