- 80% people are usually asymptomatic in the beginning, or may present with a mild fever.
- The fever is typically biphasic or saddleback nature, which means that it pauses and returns back in two days. The patient feels that his symptoms of Dengue are reducing but the fever and pains always return in a heightened manner.
- Devastating body ache, headache and backache that usually show no response to painkillers.
- Nausea and vomiting are common because the virus tends to cause gastritis.
- Petechiae or red spots on the skin of the legs or chest caused by small broken blood vessels (capillaries) may be seen if the platelet count falls considerably.
- In some severe cases, petechiae can club together to form a typical rash described as "Islands of white in a sea of red."
- Extreme form of prostration and drowsiness.
The redline symptoms of Dengue in this phase include
- Decreased blood pressure
- Accumulation of fluid in chest and abdomen
- Bleeding from digestive tract
- Decreased pulse rate
- Circulatory failure if bleeding is not controlled
The chief symptoms of Dengue in this phase include
- Altered level of consciousness