A system for monitoring health status of a patient, the system comprising: a wearable device including a watch, bracelet or wristband operable to be placed around a wrist of the patient, the watch, bracelet or wristband including a sensor area, the sensor area including at least one optical sensor and at least one electrical sensor for collecting sensor data from a single place on a body of the patient, wherein the sensor area is arranged to cover at least a radial artery of the wrist of the patient, wherein the optical sensor includes multiple light sensors and multiple light transmitters arranged in an array such that at least one of the light sensors is located near the radial artery of the wrist when the wearable device is disposed on the wrist, and wherein the electrical sensor is configured to measure an electrocardiogram, ECG, of the patient, the measurement of the ECG being taken from the wrist of the patient, a processor communicatively coupled to the at least one optical sensor and at least one electrical sensor and configured to: continuously collect, via the at least one optical sensor and at least one electrical sensor, sensor data from the single place on the body of the patient; process the sensor data to obtain at least electrocardiogram data and photoplethysmogram data; analyze at least one of the ECG data and the PPG data to obtain medical parameters associated with at least one chronic disease; detect changes in the medical parameters over time; and determine, based at least partially on the changes in the medical parameters, a progression or a remission of the at least one chronic disease. a wearable device including a watch, bracelet or wristband operable to be placed around a wrist of the patient, the watch, bracelet or wristband including a sensor area, the sensor area including at least one optical sensor and at least one electrical sensor for collecting sensor data from a single place on a body of the patient, wherein the sensor area is arranged to cover at least a radial artery of the wrist of the patient, wherein the optical sensor includes multiple light sensors and multiple light transmitters arranged in an array such that at least one of the light sensors is located near the radial artery of the wrist when the wearable device is disposed on the wrist, and wherein the electrical sensor is configured to measure an electrocardiogram, ECG, of the patient, the measurement of the ECG being taken from the wrist of the patient, a processor communicatively coupled to the at least one optical sensor and at least one electrical sensor and configured to: continuously collect, via the at least one optical sensor and at least one electrical sensor, sensor data from the single place on the body of the patient; process the sensor data to obtain at least electrocardiogram data and photoplethysmogram data; analyze at least one of the ECG data and the PPG data to obtain medical parameters associated with at least one chronic disease; detect changes in the medical parameters over time; and determine, based at least partially on the changes in the medical parameters, a progression or a remission of the at least one chronic disease. continuously collect, via the at least one optical sensor and at least one electrical sensor, sensor data from the single place on the body of the patient; process the sensor data to obtain at least electrocardiogram data and photoplethysmogram data; analyze at least one of the ECG data and the PPG data to obtain medical parameters associated with at least one chronic disease; detect changes in the medical parameters over time; and determine, based at least partially on the changes in the medical parameters, a progression or a remission of the at least one chronic disease.