To solve the question regarding the symptoms of fever, chills, cough, headache, and the bluish discoloration of lips and fingernails, we can follow these steps:
### Step-by-Step Solution:
1. **Identify the Symptoms**: The symptoms provided are fever, chills, cough, headache, and in severe cases, bluish discoloration of lips and fingernails.
2. **Consider Possible Diseases**: We need to evaluate the diseases that could cause these symptoms. The options provided are malaria, pneumonia, dengue, and asthma.
3. **Analyze Each Option**:
- **Malaria**: This disease is caused by the Plasmodium parasite and typically presents with high fever and chills, but the bluish discoloration of lips and nails is not a common symptom. Thus, malaria can be ruled out.
- **Pneumonia**: This is an infection of the lungs that can be caused by bacteria or viruses. Symptoms include high fever, chills, cough, and headache. In severe cases, pneumonia can lead to hypoxia, which may cause the lips and fingernails to turn bluish. Therefore, pneumonia fits the symptoms well.
- **Dengue**: Caused by the dengue virus, it also presents with high fever and chills but does not typically cause bluish discoloration of lips and nails. Hence, this option can be ruled out.
- **Asthma**: This condition primarily affects breathing and does not usually present with fever, chills, or the other symptoms listed. Therefore, asthma is not a suitable option.
4. **Conclusion**: Based on the analysis, the symptoms described are most consistent with pneumonia. Therefore, the correct answer is pneumonia.
### Final Answer:
The symptoms described (fever, chills, cough, headache, and bluish discoloration of lips and fingernails) are related to **pneumonia**.
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