Most are not caused by something dangerous.
Dehydration, stress, poor sleep, eye strain, caffeine changes, muscle tension, and many other factors can trigger headaches.
However, a headache that is new, unusually severe, increasingly frequent, or significantly different from your normal pattern deserves attention.
Seek urgent medical care for a sudden, extremely severe headache—particularly if it occurs with neurological symptoms such as weakness, confusion, difficulty speaking, fainting, or vision changes.
The important lesson isn’t that every headache is dangerous.
It’s that **a major change in your usual headache pattern shouldn’t automatically be ignored**.
## 5. Unusual Shortness of Breath
Being out of breath after running up several flights of stairs can be normal.
Feeling breathless while resting or during activities that previously felt easy is different.
Shortness of breath can have many causes, including respiratory infections, asthma, anemia, heart conditions, anxiety, and reduced fitness.
If breathlessness is persistent or worsening, seek medical advice.
