DEEP VEIN THROMBOSIS/BLOOD CLOT IN RIGHT LEG BELOW KNEE; BRUISING IN RIGHT HAND AND AREA IN LEFT HAND LIKE BRUISE; AREA OF BLEEDING UNDER SKIN IN LEFT UPPER ARM CLOSE TO VACCINATION SITE VERY DARK; 5 RED SPOTS FROM ELBOW TO HAND ON RIGHT AND LEFT ARM (BETWEEN THUMB TO INDEX FINGER); BLEEDING UNDER SKIN IN LEFT UPPER ARM CLOSE TO VACCINATION SITE; This spontaneous report received from a patient concerned an 83 year old female. The patient's weight was 130 pounds, and height was 65 inches. The patient's past medical history included ex smoker, surgery and concurrent conditions included bees allergy, insect allergy, alcohol user and non smoker and other pre-existing medical conditions included no drug abuse or illicit drug usage. The patient experienced drug allergy when treated with pregabalin, and oxycodone hydrochloride/paracetamol.  The patient received covid-19 vaccine ad26.cov2.s (suspension for injection, route of admin not reported, batch number: 1805031, expiry: unknown) dose was not reported, 1 total, administered on 18-MAR-2021 to left arm for prophylactic vaccination. No concomitant medications were reported. On 02-JUL-2021, before a couple of days of hospitalization, patient had a red rash on left upper arm. The area was close to where patient received the vaccine. On the same date, at the hospital, patient was told that it was bleeding under the skin and not a rash. The area turned very dark. The area on left hand was like a bruise. On the right arm, patient had 5 red spots that run from her elbow to right hand. It was unknown as to the exact date that the bleeding rash on left arm first occurred. The issue on the right hand is recent. On both hands, the affected area on both hands between the thumb and index finger. On 04-JUL-2021, the patient had swelling in both legs, was difficult to walk. On 05-JUL-2021, the daughter of the patient took to the hospital and had blood test, ultrasound, chest x ray, EKG (electrocardiogram), the physician diagnosed from ultrasound patient with a blood clot in right leg. The blood was 9.6. On the same date, the patient was admitted in the hospital for 4 days and was put on Heparin for 4 days, then stopped Heparin and switched to Eliquis. On 08-JUL-2021, patient was discharged from the hospital. The patient was just now getting the mojo back and was using a cane for a while. They were not concerned, but patient should see a nephrologist (emergency room physician at hospital said). Patient stated that hospital did not have a nephrologist during the four days of the patient. The patient had appointment with nephrologist tomorrow. Patient was concerned and lived by own. The diet of the patient was fish and fresh vegetables and numerous fruits. Treatment medications included: heparin. Additional treatment medications (dates unspecified) included: apixaban. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The outcome of the bleeding under skin in left upper arm close to vaccination site, bruising in right hand and area in left hand like bruise, area of bleeding under skin in left upper arm close to vaccination site very dark, 5 red spots from elbow to hand on right and left arm (between thumb to index finger) and deep vein thrombosis/blood clot in right leg below knee was not reported. This report was serious (Hospitalization Caused / Prolonged, and Other Medically Important Condition).; Sender's Comments: V0 20210820081 -Covid-19 vaccine ad26.cov2. Deep vein thrombosis, the bleeding under skin in left upper arm. This events are considered unassessable. The events have a compatible/suggestive temporal relationship, is unlabeled, and has unknown scientific plausibility. There is no information on any other factors potentially associated with the events.