If the following symptoms occur on a regular basis then they could be stress related and it is advisable to seek medical advice:

Mental attitudes are generally negative.
You easily get confused.
Suffer from mental lethargy.
Seldom read a book or journal relating to your work.
Have no intellectual relaxation.
Rarely develop new ideas.
Make negative statements about yourself.
Find it difficult to [...]

If the following symptoms occur on a regular basis then they could be stress related and it is advisable to seek medical advice:

Suffer from frequent headaches or migraines.
Often feel fatigued and worn out.
Fitful sleep.
If awakened you find it difficult to fall asleep again.
Lump in throat/difficult in swallowing.
Experience digestive upsets.
Recurrent or persistent stomach ulcers.
Exercise infrequently.
Grind your [...]